Search Results - The Complete Work of Charles Darwin Online

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A279 Pamphlet: Darwin, George and Francis Darwin eds. 1909. Darwin celebration, Cambridge, June, 1909. Speeches delivered at the banquet held on June 23rd. Cambridge: Cambridge Daily News. Text PDF

the triumph of the conception of evolution, as was clearly indicated by the simultaneous work of Wallace on biology, and by the publication of Herbert Spencer's philosophical investigations. Charles Darwin was also immediately followed by enthusiastic and prominent adherents, such as Huxley and Haeckel who propagated and worked out the new doctrine. This rapid success also caused a strong reaction from the side of the representatives of the old finalistic ideas, grown strong through centuries

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A288 Pamphlet: Hovey, Edmund Otis ed. 1909. Darwin memorial celebration. Annals of the New York Academy of Sciences 19, no. 1, Part 1 (31 July): 1-40. Text

as a metaphysician with a highly-wrought imagination than as a scientist. But this is only the beginning of the gloom that anticipated the dawn. Although in 1874 Dr. Elsberg, in a Contribution to the Doctrine of Evolution, addressed this academy (and also the American Association for the Advancement of Science), in favor of the principles of Darwin, although Cope continued to sustain his earlier contentions, and general workers were beginning to make original observations in favor of the

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A297 Book: Darwin, Francis & E. Hamilton Acton. 1909. Practical physiology of plants. Cambridge: University Press. Text Image PDF

IXDEX. 333 Hohnel von, on negative pressure, 8G, 87; on permeability of membranes, 88 Hofmeister, on plasticity of geo- tropic roots, 168; on forcible curvature, 138 Hoppe-Seyler on blood-method of showing oxygen evolution, 40 Hot stages, 16, 17 Hottonia, evolution of gas by, 35; for Engelmann's blood-method, 40 Humulus lupulus, oxalate in, 66; twining of, 229 ; etiolated, 56 Hydrocharis, stomata of, 107 Hydrochloric acid, see Acids Hydrometer, use of, 281-294 Hydrostatic pressure in

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A297 Book: Darwin, Francis & E. Hamilton Acton. 1909. Practical physiology of plants. Cambridge: University Press. Text Image PDF

poisonous effect of phenol, 19; injected leaf, affected by heat more easily, 14; movement of chloroplasts in leaves of, 214; sensitive to touch, 205; nsed for Briicke's experiment, 200 Oxygen, evolution of by water plants, 35, 39; affected by various conditions, 37; method of collecting, 38 Palmitin, 263 Paraheliotropism, 224 Passiflora, tendrils of, 200 Peas, imbibition of, 113; swelling of testa of, 117; warmth produced by germinating, 11 Pelargonium, nitrates in, 06 Penieillium, culture of

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A297 Book: Darwin, Francis & E. Hamilton Acton. 1909. Practical physiology of plants. Cambridge: University Press. Text Image PDF

effect on Oxalis, 19 Phillips, see Darwin, F. and Phillips Phloroglucin, 269, 271 Phlox, assimilation of sugar by flowers of, 33 Phosphoric acids, see Acids Phosphorus, used to demonstrate evolution of oxygen, 41; necessity of in water-culture, 62, 65 Phycomyces, curvature of towards iron, 212; observation on growth of, 152, 161; growing downwards heliotropieally, 1S2 Pigment, of Floridea?, 53 ; of Poly-siphomia, 53 Pigments, of Eicinus, Amaranthus, 52 Pinguicula, epinastic leaves of, 198 Pinot's

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A331 Book: Poulton, Edward Bagnall. 1909. Charles Darwin and the Origin of species: addresses, etc., in America and England in the year of the two anniversaries. London: Longmans, Green, and Co. Text Image

magnitude assigned to the variations forming the steps of the onward march of evolution. His observation and study of nature led him to the conviction that large variations, although abundant, were rarely selected, but that evolution proceeded gradually and by small 1 It is to be feared that confusion will result from Dr. A. E. Shipley's treatment of this subject in his address to the Zoological Section of the British Association at Winnipeg as reported in the Times of Aug. 28, 1909. The

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A331 Book: Poulton, Edward Bagnall. 1909. Charles Darwin and the Origin of species: addresses, etc., in America and England in the year of the two anniversaries. London: Longmans, Green, and Co. Text Image

also 262 n. 3). Detroit, 154. Development and Evolution, Baldwin, 48. diana, Argynnis, 189-90, 207. Diaposematism, 196-8, 208. Different Forms of Flowers, c., C. Darwin, 226 n. 1. Diptera, of the Beagle at Oxford, 202; as mimics of Lycidae, 121; orchids and, 219, 223; captured by Apocyneae, 225. Disa, 220 n. 1 and 2, 222-4, 227. barbata, 220 n. 1. cornuta, 220 n. 1. grandiflora, R. Trimen on, 217-18, 219 n. 1, 222. Discontinuity: see 'continuous or discontinuous, c.' Dismorphia, Belt on, 135

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A331 Book: Poulton, Edward Bagnall. 1909. Charles Darwin and the Origin of species: addresses, etc., in America and England in the year of the two anniversaries. London: Longmans, Green, and Co. Text Image

'unit character', Castle's definition of, 276, 278. ursula, see' Limenitis astyanax'. vaillantina, Egybolis, 224 n. 1. value of colour in struggle for life, 92-143. Vancouver Island, 193, 196. Variable protective resemblance, 108-10. variation, Bateson on causes of, 277. Variation, Heredity, and Evolution, Lock, 262, 270. Venezuela, 184. Verhandl. d. V. Internat. Zool. Congr. z. Berlin (1901), 155. Vestiges of the Natural History of Creation, R. Chambers, 28, 249. Vine-tendrils, 73-4. Vines, S

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F1481 Book: Anon. 1909. Order of the proceedings at the Darwin celebrations held at Cambridge June 22-June 24, 1909. With a sketch of Darwin's life. Cambridge: University Press. Text Image PDF

at my having the Copley. That such a feeling existed is clear from the action of the Council in pointedly omitting from the grounds of their award the theory set forth in the Origin. That this book could within five years of its publication be valued by the Royal Society merely as a mass of observations, etc., is striking evidence of the slow progress of Evolution. It may perhaps be said that 1870 is the date at which the current of scientific opinion is seen to be definitely flowing in the

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A162 Book: Seward, A. C. ed. 1909. Darwin and modern science. Essays in commemoration of the centenary of the birth of Charles Darwin and of the fiftieth anniversary of the publication of The origin of species. Cambridge: Cambridge University Press. Text Image PDF

University of Cambridge. . . 319 XVIII. Darwin and Geology: J. W. JUDD. . . . 337 XIX. Darwin's work on the Movements of Plants: FRANCIS DARWIN. . . . 385 XX. The Biology of Flowers: K. GOEBEL, Professor of Botany in the University of Munich. . . . 401 XXI. Mental Factors in Evolution: C. LLOYD MORGAN, Professor of Psychology at University College, Bristol. . . . 424 [page] x

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A211 Book: Geikie, A. 1909. Charles Darwin as geologist: The Rede Lecture given at the Darwin Centennial Commemoration on 24 June 1909. Cambridge: Cambridge University Press. Text Image PDF

small measure from the side of geology that he was led into those evolutional studies which have given him so just a title to our admiration and gratitude, and have placed him so high among the immortals. I have therefore decided to ask your attention to-day to an outline of what he accomplished in geology, and of the relation of his studies in that science to the great problems of evolution with which his name is indissolubly associated. In Darwin's younger days geology had hardly as yet

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A211 Book: Geikie, A. 1909. Charles Darwin as geologist: The Rede Lecture given at the Darwin Centennial Commemoration on 24 June 1909. Cambridge: Cambridge University Press. Text Image PDF

notably the great memoir, already alluded to, on the Connection of Volcanoes and Earthquakes. But he found time also for some fresh geological work in this country, more particularly in regard to certain later phases in the evolution of the present features of the surface of the land. Thus in one of these enquiries he was led to visit the Parallel Roads of Glen Roy and to write a memoir upon them wherein he advocated their marine origin44. Somewhat later he made an excursion into the district

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A211 Book: Geikie, A. 1909. Charles Darwin as geologist: The Rede Lecture given at the Darwin Centennial Commemoration on 24 June 1909. Cambridge: Cambridge University Press. Text Image PDF

had been achieved. Darwin's treatment of the subject fascinated them by the genius with which his long and varied experience abroad and at home, alike in the geological and biological domains, was brought to bear on the elucidation of the great problem of evolution for which he had so amply prepared himself. Especially were they struck with his mastery of the whole range of stratigraphy. Into that department of geology he threw a flood of new light, as for example when he so cogently urged

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A211 Book: Geikie, A. 1909. Charles Darwin as geologist: The Rede Lecture given at the Darwin Centennial Commemoration on 24 June 1909. Cambridge: Cambridge University Press. Text Image PDF

the idea of the transmutation of species. Darwin's cogent reasoning may be said to have finally set it aside, by showing how such breaks in the succession of organic remains may be completely explained by regarding them as marking enormous chronological gaps in the records of what was nevertheless a continuous organic evolution. How soon these fertile ideas in the Origin of Species bore fruit was shown a few years after the publication of that work, when Ramsay gave his two brilliant addresses

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A297 Book: Darwin, Francis & E. Hamilton Acton. 1909. Practical physiology of plants. Cambridge: University Press. Text Image PDF

CHAPTEK II. ASSIMILATION OF CARBON. Section' A. Formation of Starch. Section B. Evolution of Oxygen. Section C. Reactions of Chlorophyll. Section D. Conditions of Chlorophyll formation: Etiolation : sun and shade leaves. Section A. Formation of Starch. (24) Sachs' Iodine-method1 (Iod-Probe). This is a macroscopic method well adapted for many experiments. Almost any leaves will serve as material for the demonstration of the method, but since in research it is of importance to employ material

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A297 Book: Darwin, Francis & E. Hamilton Acton. 1909. Practical physiology of plants. Cambridge: University Press. Text Image PDF

CH. X] NITRATES. 253 allowed to stand (preferably in vacuo over sulphuric acid), characteristic crystals of copper oxide compound of amide may be obtained. (2) A well-cooled mixture of potassium nitrite and dilute sulphuric acid. Amides evolve nitrogen. (3) Boiling for some time with dilute acid. Amides give ammonia in solution which can be tested for in the usual ways, best by heating with excess of magnesia and testing for evolution of the gas. Ammonia, Nitrates, Nitrites, may be tested for

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A331 Book: Poulton, Edward Bagnall. 1909. Charles Darwin and the Origin of species: addresses, etc., in America and England in the year of the two anniversaries. London: Longmans, Green, and Co. Text Image

brief account of the history which led up to and followed the publication of the theory of Natural Selection and the Origin of Species. Darwin's sure scientific insight, and his views on evolution by mutation, briefly treated in this Section, receive further consideration in Appendices A and B. The confusion of thought threatened by the unintentional but most unfortunate misrepresentation of de Vries's term, 'fluctuating variability,' is pointed out in a footnote and further considered in Appendix

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A331 Book: Poulton, Edward Bagnall. 1909. Charles Darwin and the Origin of species: addresses, etc., in America and England in the year of the two anniversaries. London: Longmans, Green, and Co. Text Image

how Darwinism can account for the valuable mechanical functions of lifeless structures. 1 And even more arresting is the contrast between Darwin's outlook on the world of life and that of the eminent Dutch botanist who raised fresh strains, or perhaps sorted over again old mixtures of Evening Primroses, and straightway said to his friends: 'Go to, let us build us an exalted theory of evolution based on the conception of an inborn transforming force violently discharged at regular intervals by

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A331 Book: Poulton, Edward Bagnall. 1909. Charles Darwin and the Origin of species: addresses, etc., in America and England in the year of the two anniversaries. London: Longmans, Green, and Co. Text Image

extraordinary and, - as many naturalists think,—the unwarrantable exaggeration of the importance of the Dutch botanist's contributions to evolution. Omne ignotum pro magnifico. If de Vries had indeed proved, as his exponents assert, that the 'Individual differences' in which Darwin saw the steps of evolutionary progress—the 'Individual differences' whose behaviour in heredity is the lifework of Francis Galton—that these are in fact nontransmissible to offspring, then surely the greatness of

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A331 Book: Poulton, Edward Bagnall. 1909. Charles Darwin and the Origin of species: addresses, etc., in America and England in the year of the two anniversaries. London: Longmans, Green, and Co. Text Image

AT OXFORD (Feb. 12, 1909) 78 IV. CHARLES DARWIN AND THE UNIVERSITY OF CAMBRIDGE (Cambridge, June 23, 1909) 84 V. THE VALUE OF COLOUR IN THE STRUGGLE FOR LIFE 92 VI. MIMICRY IN THE BUTTERFLIES OF NORTH AMERICA (Baltimore, Dec. 31, 1908) 144 VII. LETTERS FROM CHARLES DARWIN TO ROLAND TRIMEN (1863-71) 213 APPENDIX A. CHARLES DARWIN AND THE HYPOTHESIS OF MULTIPLE ORIGINS 247 APPENDIX B. DARWIN AND EVOLUTION BY MUTATION. 254 APPENDIX C. FURTHER PROOF THAT SCIENTIFIC WORK WAS NECESSARY FOR DARWIN 256