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F276    Book:     Darwin, C. R. 1876. Geological observations on the volcanic islands and parts of South America visited during the voyage of H.M.S. 'Beagle'. 2d ed. London: Smith Elder and Co.   Text   Image   PDF
following table, indicate the much greater extension of 780 miles: Feet. Coy Inlet, south of (partly ang. m. and partly estim.) . 200 to 300 Port Desire (barom. m.) . . . . . . 245 to 255 C. Blanco (ang. m.) . . . . . . . 250 North Promontory of St. George's Bay (ang. m.) . . 250 South of New Bay (ang. m.) . . . . . 200 to 220 North of S. Josef (estim.) . . . . . . 200 to 300 Plain of Rio Negro (ang. m.) . . . . . 200 to 220 Bahia Blanca (estim.) . . . . . . . 200 to 300 The extension, moreover, of
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F276    Book:     Darwin, C. R. 1876. Geological observations on the volcanic islands and parts of South America visited during the voyage of H.M.S. 'Beagle'. 2d ed. London: Smith Elder and Co.   Text   Image   PDF
the eighth chapter. In the first section after crossing the Colorado, an old tertiary formation, namely, the Rio Negro sandstone (to be described in the next chapter), is met with: but from the accounts given me by the Gauchos, I believe that at the mouth of the Colorado the Pampean formation extends a little farther southwards. Bahia Blanca. To return to the shores of this bay. At Monte Hermoso there is a good section, about 100 feet in height, of four distinct strata, appearing to the eye
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F276    Book:     Darwin, C. R. 1876. Geological observations on the volcanic islands and parts of South America visited during the voyage of H.M.S. 'Beagle'. 2d ed. London: Smith Elder and Co.   Text   Image   PDF
directions; they include an extraordinary number of bones of gigantic mammifers and many shells. The pebbles are of considerable size, and are of hard sandstone, and of quartz, like that of the Ventana: there are also a few well-rounded masses of tosca-rock. No. 29. Section of Beds with Recent Shells and Extinct Mammifers, at Punta Alta in Bahia Blanca. The second bed (B) is about fifteen feet in thickness, but towards both extremities of the cliff (not included in the diagram) it either thins
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F276    Book:     Darwin, C. R. 1876. Geological observations on the volcanic islands and parts of South America visited during the voyage of H.M.S. 'Beagle'. 2d ed. London: Smith Elder and Co.   Text   Image   PDF
the sea; therefore Professor Ehrenberg arrives at the important conclusion that the deposit must have been of brackish-water origin. Of the thirteen Phytolitharia, nine are met with in the two deposits in Bahia Blanca, where there is evidence from two other species of Polygastrica that the beds were accumulated in brackish water. The traces of corals, sponges, and Polythalamia, found by Dr. Carpenter in the tosca-rock (of which I must observe the greater number of specimens were from the upper
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F276    Book:     Darwin, C. R. 1876. Geological observations on the volcanic islands and parts of South America visited during the voyage of H.M.S. 'Beagle'. 2d ed. London: Smith Elder and Co.   Text   Image   PDF
of like composition, at the level of the sea and under it, at M. Hermoso in Bahia Blanca. Dr. Carpenter finds that the harder varieties of tosca-rock, collected chiefly to the south, contain marine spongoid bodies, minute fragments of shells, corals, and Polythalamia; these perhaps may have been drifted inwards by the tides, from the more open parts of the sea. The absence of shells, throughout this deposit, with the exception of the uppermost layers near Buenos Ayres, is a remarkable fact: can
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F276    Book:     Darwin, C. R. 1876. Geological observations on the volcanic islands and parts of South America visited during the voyage of H.M.S. 'Beagle'. 2d ed. London: Smith Elder and Co.   Text   Image   PDF
decomposition remarkably well; and I could see no signs of any tendency to the production of argillaceous masses like those here described. I was also struck with the fact, that where a bare surface of this rock sloped into one of the quiet bays, there were no marks of erosion at the level of the water, and the parts both beneath and above it preserved a uniform curve. At Bahia, the gneiss rocks are similarly decomposed, with the upper parts insensibly losing their foliation, and passing, without any
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F276    Book:     Darwin, C. R. 1876. Geological observations on the volcanic islands and parts of South America visited during the voyage of H.M.S. 'Beagle'. 2d ed. London: Smith Elder and Co.   Text   Image   PDF
hard, rough, white rock, almost composed of broken crystals of glassy feldspar, with numerous scales of black mica, cemented in a scanty base; there was little in the appearance of this rock, to preclude the idea of its having been a true injected feldspathic dike. The matter composing these three pseudo-dikes, especially the second one, appears to have suffered, like the surrounding strata, a certain degree of metamorphic action; and this has much aided the deceptive appearance. At Bahia, in
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F276    Book:     Darwin, C. R. 1876. Geological observations on the volcanic islands and parts of South America visited during the voyage of H.M.S. 'Beagle'. 2d ed. London: Smith Elder and Co.   Text   Image   PDF
the Pampean formation was deposited by a sea-debacle rushing over the land, I may state, on the authority of a letter to me, that these translations are incorrect. The following is the passage in question: 'Durch Beachtung der mikroscopischen Formen hat sich nun festellen lassen, dass die Mastodonten-Lager am La Plata und die Knochen-Lager am Monte Hermoso, so wie die der Riesen-G rtelthiere in den D nenh giln bei Bahia Blanca, beides in Patagonien, unver nderte brakische S sswasserbildungen
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A1014.2    Book:     Wallace, A. R. 1876. The geographical distribution of animals; with a study of the relations of living and extinct faunas as elucidating the past changes of the Earth's surface. London: Macmillan & Co. vol. 2.   Text
La Plata, and Callorhinus to Patagonia, both belonging to the Colubridæ. The Elapidæ do not extend into the temperate zone; but Craspedocephalus, one of the Crotalidæ, occurs at Bahia Blanca in Patagonia (Lat. 40 S.) [page break
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F1238    Book:     Darwin, C. R. 1876. Insectenfressende Pflanzen. Translated by J. V. Carus. Stuttgart: Schweizerbart. Ch. Darwin's gesammelte Werke. Aus dem Englischen übersetzt von J. Victor Carus. Autorisirte deutsche Ausgabe, vol. 8.   Text   Image   PDF
eines Blattes gefunden, aber in welchem von den beiden Theilen wurde nicht berichtet. Genlisea aurea (Brasilien). — Ein Rest des Halses eines Schlauches war mit queren Reihen von Haaren ausgekleidet und mit verlängerten Papillen versehn, genau so wie die im Hals der Genlisea ornata. Es ist demzufolge wahrscheinlich, dasz der ganze Schlauch ähnlich gebaut ist. Genlisea filiformis (Bahia, Brasilien). — Viele Blätter wurden [page break] Cap. 18. Schlusz
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F174    Book:     Darwin, C. R. 1876. Rejse om Jorden. Populære Skildringer. Translated by Emil Chr. Hansen and Alfred Jørgensen. Copenhagen: Salmonsen.   Text   Image   PDF
dt sig Vej ikke blot gjennem Mavens V g men gjennem Siden af Rovdyret, der saaledes er blevet dr bt. Hvem skulde nogensinde have troet, at en lille bl d Fisk kunde del gge den store, rovgjerrige Haj? Den 18. Marts. Vi sejlede fra Bahia. Faa Dage efter, da ' vi ikke vare langt fra Abrolhos- erne, blev min Opm rksomhed henvendt paa noget R dbrunt i Havet. Hele Vandets Overflade saa gjennem en svag Loirpe ud, som om det var opfyldt af smaa Stykker Hakkelse med kl ftede Ender. Det er smaa
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F174    Book:     Darwin, C. R. 1876. Rejse om Jorden. Populære Skildringer. Translated by Emil Chr. Hansen and Alfred Jørgensen. Copenhagen: Salmonsen.   Text   Image   PDF
netop skulde fort res. Men skj ndt Halen har saa megen velse, synes den dog ikke i Stand til selv at finde Vej til Munden, Halsen blev i det mindste altid f rst ber rt, tilsyneladende som Vejviser. Da vi vare i Bahia, syntes en Smelder (Pyrophorus lumino-sus Ulig.) at v re det almindeligste lysende Insekt. Lyset blev ogsaa i dette Tilf lde mere glimrende, naar Dyret irriteredes. Jeg morede mig en Dag med at iagttage dette Insekts Springeevne, der efter min Mening hidtil ikke er bleven rigtig
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F174    Book:     Darwin, C. R. 1876. Rejse om Jorden. Populære Skildringer. Translated by Emil Chr. Hansen and Alfred Jørgensen. Copenhagen: Salmonsen.   Text   Image   PDF
og i Nord-Patagonien. Naar man krybende paa Jorden langsomt n rmer sig en Flok, saa komme ofte Hjortene selv af Nysgjerrighed n rmere for at se paa En. Jeg har paa denne Maade fra det samme Sted dr bt tre af en Hjord. Omendskj ndt de ere saa tamme og nys-gjerrige, saa ere de dog i h j Grad forsigtige, naar man n rmer sig dem til Hest. Her gaar Ingen til Fods, og Dyret anser kun Mennesket for sin Fjende, naar det rider og er bev bnet med Bolas. I Bahia Bianca, en ny Koloni i Nord-Patagonien, blev
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F174    Book:     Darwin, C. R. 1876. Rejse om Jorden. Populære Skildringer. Translated by Emil Chr. Hansen and Alfred Jørgensen. Copenhagen: Salmonsen.   Text   Image   PDF
benyttede af Agoutien ; men hvor som for Exempel i Bahia Bianca Bizcachaen ikke findes, der maa Agoutien selv grave. Det samme er Tilf ldet med den lille Pampas-Ugle (Athene cunicularia), om hvilken det ofte er blevet fortalt, at den ligesom en Skildvagt staar ved Hulens Munding; men i Banda Oriental er den paa Grund af, at Bizcachaen ikke der findes, ogsaa n dt til selv at udhule sin egen Bolig. Den n ste Morgen, da vi n rmede os Rio Colorado, fik Landet et andet Udseende; vi naaede snart en gr
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F174    Book:     Darwin, C. R. 1876. Rejse om Jorden. Populære Skildringer. Translated by Emil Chr. Hansen and Alfred Jørgensen. Copenhagen: Salmonsen.   Text   Image   PDF
Beredvillighed. Om Morgenen begave vi os paa Vej til Bahia Bianca, som vi naaede i to Dage. Da vi havde forladt den egentlige Lejr, kom vi forbi Indianernes Toldo's. De ere runde som Ovne og bed kkede med Huder; ved Indgangen til hver af dem var der stukket en spids Chuzo i Jorden. Toldoerne vare adskilte i Grupper, der h rte til de forskjellige Caciquers Stammer, og Grupperne vare igjen afdelte i Forhold til Ejernes Sl gtskabsforhold. Flere Mile rejste vi langs C ol o r a d o - D a 1 e n. De
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F174    Book:     Darwin, C. R. 1876. Rejse om Jorden. Populære Skildringer. Translated by Emil Chr. Hansen and Alfred Jørgensen. Copenhagen: Salmonsen.   Text   Image   PDF
Sydamerika, hvor Klimaet er nogenlunde t rt; men intet Sted har jeg set dem saa st rkt udviklede som ved Bahia Bianca. Saltet bestaar her og i de vrige Dele af Patagonien fornemlig af svovlsurt Natron og af almindeligt Kj kkensalt. Saa l nge Jordbunden er fugtig i disse „Salitrales (som Spanierne med Urette kalde dem, idet de forvexle Stoffet med Salpeter), saa ser man ikke Aiidet end en udstrakt Slette, med sort, mudret Jordbund, paa hvilken der hist og her voxer Grupper af opsvulmede, saftfulde
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F174    Book:     Darwin, C. R. 1876. Rejse om Jorden. Populære Skildringer. Translated by Emil Chr. Hansen and Alfred Jørgensen. Copenhagen: Salmonsen.   Text   Image   PDF
det var Indianere. Saa snart imidlertid hans grove Fejltagelse var gaaet op for ham, gav han mig hundrede Grunde for, at de ikke kunde v re Indianere; men alle vare de glemte i selve det kritiske jeblik. Vi rede saa videre i Fred og Ro til et lavt Bjerg, der hed Punta Alta, hvorfra vi kunde se n sten hele den store Havn ved Bahia Bianca. Den store Vandflade afbrydes af talrige Dyndbanker, som de Indf dte kalde Cangrejales, Krabbe-Banker, paa Grund af deres Rigdom paa Smaakrabber. Dyndet er saa
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F174    Book:     Darwin, C. R. 1876. Rejse om Jorden. Populære Skildringer. Translated by Emil Chr. Hansen and Alfred Jørgensen. Copenhagen: Salmonsen.   Text   Image   PDF
rende; men dette vilde have v ret en fejlagtig Slutning, thi' nogle af disse samme Muslinger leve ved Brasiliens frugtbare Kyst; og Karakteren af Havets Beboere kan i Almindelighed ikke hj lpe os til at drage nogen Slutning om Landets levende V sener. Dog tror jeg ikke, efter hvad jeg nu vil fort lle, at man af den Kjends-gjerning alene, at mange k mpem ssige Dyr have levet paa Sletterne om Bahia Bianca, kan slutte, at disse en Gang have v ret bed kkede af en fyldig Plantev xt: Jeg tvivler ikke
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F174    Book:     Darwin, C. R. 1876. Rejse om Jorden. Populære Skildringer. Translated by Emil Chr. Hansen and Alfred Jørgensen. Copenhagen: Salmonsen.   Text   Image   PDF
nordligere formodentlig stode under Vand), endogsaa i deres nuv rende Tilstand lige saa vel som de nulevende N shorn og Elefanter over Sydafrikas Karros. Jeg skal nu skildre Levemaaden af de mere interessante Fugle, som ere almindelige paa Nord-Patagoniens udstrakte de Sletter. Lad os begynde med den st rste, den sydamerikanske Struds. Dens Livsvilkaar i Almindelighed kjender Enhver. Den lever af Plantef de, saasom R dder og Gr s; men ved Bahia Bianca har jeg gjentagne Gange set tre, fire Stykker
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F174    Book:     Darwin, C. R. 1876. Rejse om Jorden. Populære Skildringer. Translated by Emil Chr. Hansen and Alfred Jørgensen. Copenhagen: Salmonsen.   Text   Image   PDF
fortalte mig, at han en Gang havde set en snehvid Afart („Albino ), der var overordentlig skj n. Jeg tror, det er Han-Strudsen, der frembringer en ejendommelig dyb, hvislende Lyd; da jeg f rste Gang h rte den, mens jeg stod mellem nogle Sandh je, antog jeg, at det var et vildt Dyr, der frembragte den, thi Lyden er af en saadan Art, at man ikke kan sige, hvorfra eller hvor langt borte fra den kommer. Da vi vare i Bahia Bianca i Maanederne September og Oktober, fandt vi ggene alle Vegne i overordentlig
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F174    Book:     Darwin, C. R. 1876. Rejse om Jorden. Populære Skildringer. Translated by Emil Chr. Hansen and Alfred Jørgensen. Copenhagen: Salmonsen.   Text   Image   PDF
Bahia Bianca. Vikle vi fange En, saa var det n dvendigt i samme jeblik, vi opdagede den, at fare ned af Hesten: i bl d Grund gravede Dyret sig saa hurtigt ned, at Bagkroppen omtrent er forsvunden, inden man naar af Hesten. Det syntes n sten at v re Synd at dr be et saa kj nt lille Dyr — thi „det er saa roligt („son tan mansos ), som Gaucho'en siger, naar han sk rper sin Kniv paa Ryggen af et af dem. Af Krybdyr er der en M ngde Arter. En Slange (en Trigono-cephalus eller Cophias, Pilhoved) maa
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F174    Book:     Darwin, C. R. 1876. Rejse om Jorden. Populære Skildringer. Translated by Emil Chr. Hansen and Alfred Jørgensen. Copenhagen: Salmonsen.   Text   Image   PDF
anstille'sig d dt, med udstrakte Ben, Kroppen trykket mod Jorden og jnene lukkede; st der man st rkere til det, saa begraver det sig med stor Hurtighed i det l se Sand. Paa Grund af den flade Krop og de korte Ben kan det ikke l be ret st rkt. Jeg vil her tilf je nogle Bem rkninger om Dyrenes Vinters vn i denne Del af Syd-Amerika. Strax da vi kom til Bahia Bianca, den 7. September, fik vi det Indtryk, at Naturen n ppe havde forundt dette sandede og t rre Land et eneste levende V sen. Men da vi
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F174    Book:     Darwin, C. R. 1876. Rejse om Jorden. Populære Skildringer. Translated by Emil Chr. Hansen and Alfred Jørgensen. Copenhagen: Salmonsen.   Text   Image   PDF
Gjennemsnitsvarme for Dagen var 65 ½° , den laveste 46°; den laveste Grad, Thermometret naaede, var 41½°, og en sj lden Gang steg det saa h jt som til 70°. Og skj ndt Varmen var saa h j, laa dog alle Billerne, mange Edderkopper, Snegle og Landmuslinger, Padder og Firben i Dvale under Stenene. Vi saa, at i Bahia Bianca, 4 Grader l ngere mod Syd og altsaa kun med en ganske lidt koldere Luft, var denne samme Temperatur med en noget lavere h jeste Varmegrad, tilstr kkelig til at v kke alle Dyr til Liv. Det
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F174    Book:     Darwin, C. R. 1876. Rejse om Jorden. Populære Skildringer. Translated by Emil Chr. Hansen and Alfred Jørgensen. Copenhagen: Salmonsen.   Text   Image   PDF
forskjellige Na-turgjenstande. Vi samlede en M ngde af dem og bragte dem hjem. Medens jeg opholdt mig i Bahia Bianca .og ventede paa The Beagle, var Stemningen meget urolig og ophidset paa Grund af Rygter om Krige og Sejrvindinger mellem Rosas Tropper og de vilde Indianere. En Dag kom der Melding om, at hele Bes tningen i en af Posta'erne paa Linien til Buenos Ayres var bleven myrdet. N ste Dag ankom der 300 Mand fra Colorado under Miranda's Komando. En stor Del af disse M nd vare Indianere („Mansos eller
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F174    Book:     Darwin, C. R. 1876. Rejse om Jorden. Populære Skildringer. Translated by Emil Chr. Hansen and Alfred Jørgensen. Copenhagen: Salmonsen.   Text   Image   PDF
man af gammel Vane at se et uj vnt Land, bestr et med store Klippestykker. Her viser Naturen, at den sidste Bev gelse, f r Havbunden forvandles til t rt Land, undertiden kan foregaa meget roligt. I dette Tilf lde l ngtes jeg efter at se, hvor langt fra Moderklippen jeg kunde finde Brudstykker af den i Form af Rullestene. Ved Kysten af Bahia Bianca og i N rheden af Nybygden laa der nogle af Kvarts, der sikkerlig maa v re komne herfra; men de have vandret en Vej paa fem og fyrretyve Miles L ngde
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F174    Book:     Darwin, C. R. 1876. Rejse om Jorden. Populære Skildringer. Translated by Emil Chr. Hansen and Alfred Jørgensen. Copenhagen: Salmonsen.   Text   Image   PDF
sammen. En Dag gik jeg paa Jagt ved Bahia Bianca; Folkene der ride kun i n Halvkreds saaledes, at den ene er en Fjerdingvej fjernet fra den anden. En smuk Hanstruds, der var bleven opdreven af de forreste Ryttere, fors gte at undslippe til den ene Side. Gaucho'erne forfulgte den med stor Voldsomhed og tumlede deres Heste med den mest beundringsv rdige Sikkerhed, idet Enhver svingede Kuglerne over sit Hoved. Tilsidst slyngede den Forreste sine gjennem Luften; Strudsen rullede omkring, og dens
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F174    Book:     Darwin, C. R. 1876. Rejse om Jorden. Populære Skildringer. Translated by Emil Chr. Hansen and Alfred Jørgensen. Copenhagen: Salmonsen.   Text   Image   PDF
faa Vished om, hvorvidt den var bleven aflejret samtidig med de vrige Levninger; thi jeg havde den Gang endnu ikke lagt M rke til, at der iblandt Fossilierne fra Bahia Bianca var skjult en Hestetand i den indhyllende Masse, ' og det var den Gang heller ikke med Sikkerhed bevist, at Hestelevninger ere almindelige i Nord-Amerika. Lyell har for nylig bragt en Hestetand med sig fra de Forenede Stater, og det er en interessant Kjendsgjerning, at Professor Owen hverken hos de fossile eller de nu
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F174    Book:     Darwin, C. R. 1876. Rejse om Jorden. Populære Skildringer. Translated by Emil Chr. Hansen and Alfred Jørgensen. Copenhagen: Salmonsen.   Text   Image   PDF
nemlig Megatberium, Megalonyx og Mylodon. Omtrent i den selv samme Periode (som Skallerne ved Bahia Bianca vise) fandtes der i Syd-Amerika, efter hvad vi netop have set, en Mastodon, Hest, skedehornet Dr vtygger og de samme tre Sl gter- (saavelsom desuden flere andre) af Gumlere. Som en F lge heraf er det aabenbart, at Nord- og Syd-Amerika tidligere vare n rmere besl gtede med Hensyn til Karakteren af deres Landdyr end nu, eftersom disse Str kninger i en sen geologisk Periode havde de ovenfor
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F174    Book:     Darwin, C. R. 1876. Rejse om Jorden. Populære Skildringer. Translated by Emil Chr. Hansen and Alfred Jørgensen. Copenhagen: Salmonsen.   Text   Image   PDF
M nd, der havde Udsalg af forskjellige Smaating, at spise til Middag hos General Rosas. En S n af en Major i Bahia Bianca erhvervede sig sit Livsophold ved at lave Papirs-Cigarer, og han nskede at ledsage mig som Vejviser eller Tjener til Buenos Ayres, men hans Fader gjorde Indvendinger — alene paa Grund af Faren. Mange Officerer i H ren kunne hverken l se eller skrive og dog m des alle i Selskabet som lige stillede. I Entre Rios bestod Sala'en kun af sex Repr sentanter. En af dem holdt en
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F174    Book:     Darwin, C. R. 1876. Rejse om Jorden. Populære Skildringer. Translated by Emil Chr. Hansen and Alfred Jørgensen. Copenhagen: Salmonsen.   Text   Image   PDF
, at hvis De ikke drikke Saltvand, saa drikke de overhovedet ikke. Midt paa Dagen v lte de sig hyppig i St vet i skaalformede Huller. Hannerne k mpe indbyrdes. En Dag passerede to ganske t t forbi mig, skrigende og snappende efter hverandre, og blandt de Skudte havde flere dybe Ar i Huden. Undertiden kan man se hele Hjorde gaa ud paa Opdagelsesrejser. Ved Bahia Bianca, hvor disse Dyr ere yderst sj ldne i et B lte tredive Mile indenfor Kysten, saa jeg en Dag Sporene af tredive eller fyrretyve, som
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F174    Book:     Darwin, C. R. 1876. Rejse om Jorden. Populære Skildringer. Translated by Emil Chr. Hansen and Alfred Jørgensen. Copenhagen: Salmonsen.   Text   Image   PDF
, at ogsaa Ma-crauchenia paa den sydlige Halvkugle levede l nge efter denne Gletscher-Periode. Er det Mennesket, der strax efter sin Indvandring i Sydamerika, saaledes som man har formodet, delagde det klodsede, ubehj lpsomme Megatherium og de andre Gumlere? Vi maa i det Mindste se os om efter en anden Grund til Udryddelsen af den lille Tucutuco ved Bahia Bianca og af de mange fossile Mus og andre Smaadyr i Brasilien. Ingen kan forestille sig, at en T rke, selv om den var langt st rkere end de
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F174    Book:     Darwin, C. R. 1876. Rejse om Jorden. Populære Skildringer. Translated by Emil Chr. Hansen and Alfred Jørgensen. Copenhagen: Salmonsen.   Text   Image   PDF
Maade at staa i Forbindelse med dem, og da de ere for-skjellige i Henseende til St rrelsen af de ydre og indre Celler kker, saa er jeg n sten overbevist om, at de i deres Virksomhed snarere ere knyttede til Grenenes hornede Axe end til Polyperne i Cellerne. Det kj dede Vedh ng ved den nedre Ende af S fjeren (beskreven ved Bahia Bianca) danner ogsaa en Del af Polypen paa samme Maade som et Tr s R dder udgj r en Del af hele Tr et og ikke af hvert enkelt Blad eller af hver s rskilt Blomsterknop
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F174    Book:     Darwin, C. R. 1876. Rejse om Jorden. Populære Skildringer. Translated by Emil Chr. Hansen and Alfred Jørgensen. Copenhagen: Salmonsen.   Text   Image   PDF
brier suge Honning af Blomsterne, og Papeg jer de Frugterne, paa „Winter's Bark -under 55° sydlig Brede. Jeg har allerede bem rket, i hvilken Grad Havet vrimler af levende Skabninger; Sneglene og Smaakrebsene (saasom PateM , Fissurell , Chiton, Lepadin ) opnaa efter Sowerby' en langt betydeligere St rrelse og kraftigere Udvikling end de tilsvarende Arter paa den nordlige Halvkugle. En stor Voluta er. meget almindelig ved den sydlige Del af Ildlandet og Falklands erne. Ved Bahia Bianca (39° s
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F174    Book:     Darwin, C. R. 1876. Rejse om Jorden. Populære Skildringer. Translated by Emil Chr. Hansen and Alfred Jørgensen. Copenhagen: Salmonsen.   Text   Image   PDF
men ere almindelige i N rheden af Bahia Bianca. Landskabet fra Magelhaens-Str det langs med Patagoniens hele stlige Kyst til Rio Colorado har en ensformig Karakter. Og det synes, at Landet dybere inde lige fra denne Flod i en bueformet Linie til San Luis og maaske endogsaa nordligere har samme Beskaffenhed. sten for denne Buelinie ligger det Basin, som dannes af Buenos Ayres's forholdsvis fugtige og gr nne Sletter. Mendozas og Patagoniens ufrugtbare Sletter bestaa af et Lag Rullestene, som ere
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F174    Book:     Darwin, C. R. 1876. Rejse om Jorden. Populære Skildringer. Translated by Emil Chr. Hansen and Alfred Jørgensen. Copenhagen: Salmonsen.   Text   Image   PDF
kun var tempor r. I hvordan det end forholder sig, kunne vi v re sikre paa, at en Ascensions Klima og Naturfrembringelser i en tidligere Periode vare aldeles forskjellige fra, hvad de nu ere. Og hvor finde vi vel overhovedet paa vor Jords Overflade en Plet, hvor en n jagtig Unders gelse ikke opdager Tegn paa dette endel se Kredsl b af Forandringer, som Kloden har v ret, er og viL blive underkastet? Efter at vi havde forladt Ascension sejlede vi til Bahia paa Brasiliens Kyst for at fuldst ndiggj
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F276    Book:     Darwin, C. R. 1876. Geological observations on the volcanic islands and parts of South America visited during the voyage of H.M.S. 'Beagle'. 2d ed. London: Smith Elder and Co.   Text   Image   PDF
within then becomes silted up with mud. The repetition of this process, without any elevation of the land, would form a level plain traversed by parallel lines of sand-hillocks; during a slow elevation of the land, the hillocks would rest on a gently inclined surface, like that on the northern shore of Bahia Blanca. I did not observe any shells in this neighbourhood at a greater [page] 19
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F276    Book:     Darwin, C. R. 1876. Geological observations on the volcanic islands and parts of South America visited during the voyage of H.M.S. 'Beagle'. 2d ed. London: Smith Elder and Co.   Text   Image   PDF
as the level Pampas ranges many hundred miles northward of the point, where M. d'Orbigny found at the height of 100 feet beds of the Azara, the space in a north and south line, which has been uplifted within the recent period, must have been much above the 1,180 miles. By the term 'recent,' I refer only to that period within which the now living mollusca were called into existence; for it will be seen in the eleventh Chapter, that both at Bahia Blanca and P. S. Julian, the mammiferous
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F276    Book:     Darwin, C. R. 1876. Geological observations on the volcanic islands and parts of South America visited during the voyage of H.M.S. 'Beagle'. 2d ed. London: Smith Elder and Co.   Text   Image   PDF
of the Plata, being greater than at Bahia Blanca or at San Blas, may be owing to the upheaval of these latter places having been connected with the distant line of the Cordillera, whilst that of the provinces of La Plata was in connection with the adjoining tertiary volcanic axis. 2 See Sir W. Parish's work on 'La Plata,' p. 242. For a notice of an earthquake which drained a lake near Cordova, see also Temple's 'Travels in Peru.' Sir W. Parish informs me, that a town between Salta and Tucuman
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F276    Book:     Darwin, C. R. 1876. Geological observations on the volcanic islands and parts of South America visited during the voyage of H.M.S. 'Beagle'. 2d ed. London: Smith Elder and Co.   Text   Image   PDF
had been gradual, these shells would all have been rolled on successive beach-lines. But in protected bays, such as in that of Bahia Blanca, wherever the sea is accumulating extensive mud-banks, or where the winds quietly heap up sand-dunes, beds of shells might assuredly be preserved buried in the positions in which they had lived, even whilst the land retained the same level; any, the smallest, amount of elevation would directly aid in [page] 21
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F276    Book:     Darwin, C. R. 1876. Geological observations on the volcanic islands and parts of South America visited during the voyage of H.M.S. 'Beagle'. 2d ed. London: Smith Elder and Co.   Text   Image   PDF
transsported to a distance of between forty and fifty miles to the shores of Bahia Blanca.1 The highest peak of the S. Ventana is, by Captain Fitz Roy's measurement, 3,340 feet, and the calcareous plain at its foot (from observations taken by some 1 Schmidtmeyer ('Travels in Chile,' p. 150) states that he first noticed on the Pampas, very small bits of red granite, when fifty miles distant from the southern extremity of the mountains of Cordova, which project on the plain, like a reef into the sea. [page
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F276    Book:     Darwin, C. R. 1876. Geological observations on the volcanic islands and parts of South America visited during the voyage of H.M.S. 'Beagle'. 2d ed. London: Smith Elder and Co.   Text   Image   PDF
that the whole skeleton was held together by its ligaments, when deposited in the gravel in which I found it. Some cervical vertebr and a humerus of corresponding size lay so close to- 1 After having packed up my specimens at Bahia Blanca, this point occurred to me, and I noted it; but forgot it on my return, until the remains had been cleaned and oiled: my attention was afterwards recalled to the subject by some remarks by M. d Orbigny. [page] 32
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F276    Book:     Darwin, C. R. 1876. Geological observations on the volcanic islands and parts of South America visited during the voyage of H.M.S. 'Beagle'. 2d ed. London: Smith Elder and Co.   Text   Image   PDF
carbonate of lime: similar compact varieties are met with on the Salidillo and Seco. The absolute identity (I speak after a comparison of my specimens) between some of these varieties, and those from Tapalguen, and from the ridge south of Bahia Blanca, a distance of 400 miles of latitude, is very striking. At Resario there is but little tosca-rock: near this place I first noticed at the edge of the river traces of an underlying formation, which, twenty-five miles higher up in the estancia of Gorodona
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F276    Book:     Darwin, C. R. 1876. Geological observations on the volcanic islands and parts of South America visited during the voyage of H.M.S. 'Beagle'. 2d ed. London: Smith Elder and Co.   Text   Image   PDF
Corrientes, which, as already remarked, is said not to be covered by the Pampean formation, and may therefore, at the period of its deposition, have existed as dry land. I have already given my reasons for believing that the animals embedded at M. Hermoso and at P. Alta in Bahia Blanca, lived on adjoining land, formed of parts of the already elevated Pampean deposit. With respect to the food of these many great extinct quadrupeds, I will not repeat the facts given in my Journal (second edit. p. 85
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F276    Book:     Darwin, C. R. 1876. Geological observations on the volcanic islands and parts of South America visited during the voyage of H.M.S. 'Beagle'. 2d ed. London: Smith Elder and Co.   Text   Image   PDF
their remains permits of identification), extended from the Southern United States of North America to Bahia Blanca, in lat. 39 S., on the coast of Patagonia. The fact of these animals having inhabited tropical and temperate regions, does not appear to me any great difficulty, seeing that at the Cape of Good Hope several quadrupeds, such as the elephant and hippopotamus, range from the Equator to lat. 35 south. The case of the Mastodon Andium is one of more difficulty, for it is found from lat
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F276    Book:     Darwin, C. R. 1876. Geological observations on the volcanic islands and parts of South America visited during the voyage of H.M.S. 'Beagle'. 2d ed. London: Smith Elder and Co.   Text   Image   PDF
hitherto met with of the discovery of fossil mammiferous remains in the Pampas, may be hereafter useful to a geologist investigating this region, and it tends to show their extraordinary abundance. I heard of and saw many fossils, the original position of which I could not ascertain; and I received many statements too vague to be here inserted. Beginning to the south: we have the two stations in Bahia Blanca, described in tihs chapter, where, at P. Alta, the Megatherium, Megalonyx, Scelidotherium
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F276    Book:     Darwin, C. R. 1876. Geological observations on the volcanic islands and parts of South America visited during the voyage of H.M.S. 'Beagle'. 2d ed. London: Smith Elder and Co.   Text   Image   PDF
southern seas at this period was not hotter than what might have been expected from the latitude of each place, appears to me highly important; for we must believe, in accordance 1 It may be worth while to mention that the shells living at the present day on this eastern side of S. America, in lat. 40 , have perhaps a more tropical character than those in corresponding latitudes on the shores of Europe: for at Bahia Blanca and S. Blas, there are two fine species of Voluta and four of Oliva
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F276    Book:     Darwin, C. R. 1876. Geological observations on the volcanic islands and parts of South America visited during the voyage of H.M.S. 'Beagle'. 2d ed. London: Smith Elder and Co.   Text   Image   PDF
have a 'grain,' but they are not separated into distinct folia or lamin . There are, however, several other varieties of gneiss regularly foliated, and alternating 1 I landed at only one place north of Bahia, namely, at Pernambuco. I found there only soft, horizontally stratified matter, formed from disintegrated granitic rocks, and some yellowish impure limestone, probably of a tertiary epoch. I have described a most singular natural bar of hard sandstone, which protects the harbour, in the
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F276    Book:     Darwin, C. R. 1876. Geological observations on the volcanic islands and parts of South America visited during the voyage of H.M.S. 'Beagle'. 2d ed. London: Smith Elder and Co.   Text   Image   PDF
, 537 Clayslate, its decomposition and junction with granite, at the Cape of Good Hope, 167 formation of, T. del Fuego, 441 of Concepcion, 457 felspathic, of Chile, 471, 475, 482 felspathic, of the Uspallata range, 517, 520 black siliceous, band of, in porphyritic formations of Chile, 477 Claystone-porphyry, formation of, in Chile, 472 origin of, 477 eruptive sources of, 575 Cleavage, of clayslate in Australia, 147 definition of, 424 at Bahia, 425 Rio de Janeiro, 245 Maldonado, 429 [page] 63
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F276    Book:     Darwin, C. R. 1876. Geological observations on the volcanic islands and parts of South America visited during the voyage of H.M.S. 'Beagle'. 2d ed. London: Smith Elder and Co.   Text   Image   PDF
concretions, 395 upfilled, at Port Desire, 440 in clayslate, 521 Fitton, Dr., on calcareous breccia, 165 on the geology of T. del Fuego, 446 FitzRoy, Capt., on the elevation of the Falkland Islands, 210 on the elevation of Concepcion, 236 Flagstaff-hill, St. Helena, 86 Fleurian de Bellevue on sph rulites, 71 Fluidity of lavas, 117, 119 Foliation, definition of, 424 of rocks at Bahia, 424 Rio de Janeiro, 425 Maldonado, 429 Monte Video, 433 S. Guitru-gueyu, 434 Falkland I., 440 T. del Fuego, 446
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F276    Book:     Darwin, C. R. 1876. Geological observations on the volcanic islands and parts of South America visited during the voyage of H.M.S. 'Beagle'. 2d ed. London: Smith Elder and Co.   Text   Image   PDF
GILL Gill, Mr., on brickwork transported by an earthquake-wave, 272 Gillies, Dr., on heights in the Cordillera, 482 on extension of the Portillo range, 499 Glaciers, their structure, 80 Glassiness of texture, origin of, 70 Glen Roy, parallel roads of, 260 sloping terraces of, 295 Glossopteris Brownii, 147 Gneiss, with a great embedded fragment, 149 derived from clayslate, 168 near Bahia, 422 of Rio de Janeiro, 425 decomposition of, 427 Gneiss-granite, forms of hills of, 160 Gold, distribution
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