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(excellent observations)

Port Famine Feb 3^d [1834] — Common rock. slate but little fissile on Port St Anna South side (slate 1790) in layers or beds dipping running N. 71 (—23 V) W (=48°) & dip southerbly∠56°. — crossed by numerous other lines (forming rhomboids which run NE by E & SW by W (true). —

On other N side of St Anna — exactly same dip

In the first & second little coves the direction is N. 68° W, but dip only 29°. — Here the slate is separated by many grey calcareo harder beds (1791). — I see slight flaws. here by the non-correspondence. of these beds. —

They are traversed by few narrow dykes of earthy fusible matter. trap. (1792) — the sides of these are slightly tortuous. they cross at right angle both previous sorts of beds: in one case 2 more approximate 2 feet apart & enclosed slate — which was not altered. — they approached to each other, then separated & one died away. — In these beds there are nodules of dark calcareous rock. but they are more abundant further on & will be described. — I have shown the bed & side of creek ran about NW & SE. the creek ran about E by N & S by W — on the northern shore I was surprised to find slate, running. N 69° W but dipping to the NE at ∠ 15°. — therefore an anticlinal line runs obliquely across the creek. —

The dip continued to Rocky point, in one place traversed by vertical cleavage line running NE by E & SW by S. —

The former cleavage more resembles beds. The slate is

See Darwin's discussion of Port Famine in South America, pp. 151-2, 156, 265, 267.

125 verso

here more compact & slightly calcareous (1789) it contains very numerous globular & shell shaped concretions of dark coloured limestone: in some of these impressions of siphon shaped [cornu-annonas]. — (1785—1788). —

One of these I measured most perfect, measured in the centre. following the curvatures 21 inches short legs of siphon. 7 inches: head the of do. (& this lower limit was the rather broardest 2.7 inches. = Several of these impressions. =

Conglomerate at Cape. Remarkable; many some blocks of do on beach here

on the salte veins ( [illeg] with & across beds) of white carb of lime. — crystallized. — & nodules of iron pyrites

Feb. 7^th [1834] — The calcareous concretions are very curious shape sausage— cylinders, stalactiform. occur rather in layers.

At North side of Rocky Point, there is a coarse greenish slate (1811) passing into this greywacke (1812) with small angular fragment of green slate. — in the former there was the remains of some twelve shell.

I omitted to mention that in the slate I found a curious thing organic remains the nature of which I am quite ignorant (1813). also saw a Nautilus such as will be mentioned at Mount Tarn. only three as large. —

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Port Famine

If the slate is subject to stratification, we shall probably have the puzzle of long distance in direction of dip, with exact same points, high angle & no anticlinal line. —

2^d the anticlinal line occurs in a valley. — hills on each side much higher. — It would however well explain form of land & hills: similarity of form of gneiss & slate. — But then it must be remembered we know there is such a thing as highly inclined original cleavage: it is strangely improbable that in the South there should be cleavage running dipping to SSW & have stratification to SW.

Feb. 6^th. [1834] Between Port St Anna & rocky Point got following dips.

[the coastline is sketched on the left side of the page] L Rocky P. H G F E D C cx b a K St Anna P. Famine

(a)	N	68 23 45	W	∠	25.	S.
(b)	—	70 23 47	—	—	22	—
(c)	—	55 23 32	—	—	30	—
(c)	—	60 23 37		—	38.
(c) x	—	78 23 47			25
(d)	irregular no decided strata
(E)	dip NW ∠ 5. or horizontal
(F)		81	81 23 58		11	north
(do)		69 23 46			15	north
(G)		75 23 52			17	do
(H)		70 23 49			11	do
(K)		80	dip 78° to S or ┴ staying tortuous		78 23 55
L		70 23 47			45 dip	North. dip 78° to S or ┴ staying tortuous

I have only one remark to make. it is very extraordinary the anticline line being at the point where the line commences a mile or two to the mouth. Mt Phillip ([blank]) feet high. —

126 verso

Mount Tarn Feb. 6^th. [1834] — The summit only shows rocks. Hence on the side of St: we have a precipitous escarpement — the rock is essentially compact coarse slate; generally blueish sometimes yellowish (1810); parting of seams ferruginous, also contains pyrites: the structure is curious, appearing generally like so many immense common balls of 3 or 4 feet diameter. round which the slate folds. — as is shown by its decomposition. — Some of the rock contains much iron. — I found in one bed not far from summit (height 2600 ft) a univalve shell & bivalve-like Terebratula which I lost. — Some of an Echinus; but these were uncommon there were however numerous fragments of impressions of a shell, somewhat resembling that found North of Pocky Point. — it was special. & flattened like a Nautilus & evidently very common. — 1809). —

It was very curious effect of snow in decomposing rock. — rubble & vegetation at foot. —

Stratification hard to be made out. The highest point dipped at ∠ 28 to a ran N & N. 62. W. — the whole ridge veined from this to 20° & more 23/39 degree less west.

I could see other escarpements to the western resembled this. Hill seemed to run NW by W & SE by E. (compass) But none of these are accentuated. —

NW by 1/2 W to NW by N

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Feb 6^th. [1834] At foot of Mount Tarn. many boulders of western rocks at highest part of ordinary high water mark

the largest was of Hornblende rock. was a rough [illeg] with convex & rounded, mean height 4ft 6in feet. girth 24 ft. — Many were half this sum & quarter. common 2 in 3 or 2 times as large as the head. — [sketch]

In the sheltered rocks North of P. St Anna. blocks of that peculiar (NW arch of P. [Julian] an granite block girth 15 ft. mean length 2 3 ft 6 feet: [many] 2.6 feet. — Another of conglomerate nearly [illeg] size, generally very few in such these sites

Mem: Alluvial formation: Height?? Origin of Rock M. Philip

A couple of miles north of Rocky point slides nearly [vertical] (or dip northernly). (N. 65 W. comp). & nearer to same point N. 55 W. 23/32 comp. — 23/42 P. St Anna. — strata slightly [illeg]

Bivalve & shell. like a Turritella in a green [conglomerate] pebbles of quartz; blending with the slate: in [irregular] sort of masses or veins: perhaps slightly parallel to [illeg] but very obscure: (Mem argument from stones not [illeg] rounded & at high water mark must both be [illeg] on very limited sense). — Mem. Wickham [illeg]

Blocks of granite &c (2.10 1/2.1) & many other layers & [illeg] in [illeg] of hills 30 & 40 feet above sea. [illeg] Perhaps M. Phillip [illeg] (creek all run NW.) block but smally angular. — coarse hornblendic

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