iTAILEll 225 



ADDITIONAL OBSERVATIONS. 



Per 

 Ceiiti 



ths, 

 chs, 



s of 



ths, 

 dis, 

 'oly- 



iths, 

 and 

 s of 

 nns, 



tsof 

 anch 



riid a 



- „ly one hundredweight of the deposit, which showed three distinct layers. 

 °" .nches in thickness, composed of a soft, thin, dark- brown mud, amongst 

 Tia-rkeUa ttrehra. Quite 9S per cent, of these were dead shells. Many 

 I bright pink-coloured actinia (Bunodes coronata), and some an ascidian 

 niddle layer, 4i inches in thickness, was made up of a compact sandy mud, 

 f organisms. The lo%ver layer consisted of a dark blue unctuous clay of 

 o organic remains were observed. 



. - _the deposit from this station was examined, but, in comparison to Station 

 ^ T'e were much less abundant. A thin surface layer of fine brown mud 



.. jiass of deposit as was obtained over the area of Station I. The sample 

 S also that in the dredge, showed the three distinct layers. The surface layer 

 r quantity of the dead shells of TurritfUa ttrehra. The other organisms 

 r two exceptions, similar to those obtained at Station I. 



„, jnsiderable quantity of the deposit both at the east and west end of the 

 3 east end was a blue-grey sandy mud containing many dead shells of P. 

 )sses, of the worm tubes Sabrllaria alveolala. At the west end the dredge 

 and shells with patches of blue, very coherent, plastic clay ; in other parts 

 gnients of rounded — a few angular— tine-grained compact red Sandstone, 

 2 rock, f to 3 inches, all more or less overgrown with balanus, serpula, and 

 s of the tine argillaceous material was observable. 



Q.l dredge gave at this station a more typical homogeneous n:ud, differing from 

 o IV. by the absence of perfect deail sliells of tlie larger moUusca, and the 



IS of 



all 



hich are here more uniform, and the absence of rock fragments, with a 

 killaceous material. 



-hly a few grains of shell fragments. The dredge brought up fully one 

 ^ir' i **■ ^''® middle of this station, made up chieflj' of the broken-down parts of 

 ' ! hells, from which the bulk of carbonate of lime is derived, the majority of 

 , i remains, are seen to be more or less iniilirated throughout with ferruginous 

 ' ' c greenish-grey in colour. In some crystallisation has taken place. All 

 . with dilute hydrochloric acid, beautiful and perfect casts remain, brown, 

 grey-black. The whole of the deposit taken by dredge was carefully passed 

 this way a number of smoothly-rouuded and angular rock fragments and 

 ^^oarse and fine-grained sandstone, mica-schist, augite, diorite, gneissic rock, 

 suring J to f icch. Many of these were mucli altered. Some are perfectly 

 while others are angular. 



,. , _. the deposit came up in the dredge showing in parts layers of shelly sand, in 

 Jtlis, I JU Anotiier haul with dredge in the midule of this station gave somewhat 



y ; while at the icest end the dredge gave a fine-grained reddiah-broivu sand, 



and slight traces of brown mud on the surface. 



:ichs, 



the 



bino- 



?oly- 



}ods, 



frag- 



and 



)ods, 

 ms, 



lOi 



-J with this homogeneous mud, from which, after being washed through 

 18, Lameliibyaiichs, Crustacea, Echinoaermx, Worms, dkc, di-c, were obtained, 

 of this station gave a pure reddish sand, with a few shells, as Fu-sus, 

 >d Agteridf. 



IS of 

 lelli- 



97 



„w up a small quantity of bluisli-grey mud, with a thin surface layer of fine mud 

 Se dredge brought up a quantity of similar material, showing traces of a thin 

 wn mud, which appears to owe its origin to a more recent time, probably to 

 f ' irgillaceous matter in suspension carried out from the River Forth. Most of 

 "" ' gh the sieves and the organisms preserved, which are here more abundant 

 i>ns examined. 



