200 DEPTHS OF THE OCEAN 



this chapter ; from another station the ear-bone of a whale and 

 two sharks' teeth were obtained. 



Of the twenty-seven samples submitted to detailed examina- 

 tion, nineteen were Globigerina oozes, six were Blue muds, one 

 a Pteropod ooze, and one a Globigerina ooze overlying Blue 

 mud. The Globigerina oozes occur over the route followed by 

 the " Michael Sars " as far west as long. 44° W. ; the Globigerina 

 ooze overlying Blue mud occurred to the north of the Rockall 

 Bank ; the Pteropod ooze near the Canary Islands ; and the 

 Blue muds in the Eastern Atlantic from the Faroe Channel to 

 the Straits of Gibraltar. The " Michael Sars " samples show 

 that the Globigerina ooze approaches nearer to the coasts of 

 the British Islands than was previously supposed, having been 

 found at the following depths along the continental slope off the 

 European and African coasts: 547 fathoms (Station 4), 1256 

 fathoms (Station 25 A), 1 122 fathoms (Station 25 B), 1422 fathoms 

 (Station 35), 746 fathoms (Station 41), 688 fathoms (Station 93), 

 981 fathoms (Station 95), 742 fathoms (Station 98), and 835 

 fathoms (Station 100). Globigerina ooze and Pteropod ooze 

 were found in the neighbourhood of the Canary Islands in 

 positions where they were previously unrecorded. 



An interesting point in connection with the " Michael Sars" 

 deposits is the number of instances where the sounding-tube 

 had plunged deeply into the sediment, bringing up sections 

 varying from two to fourteen inches in length, and in some 

 cases marks observed on the outside of the sounding-tube 

 indicated that it had penetrated still farther into the deposit. 

 Though in most cases the material was apparently uniform 

 throughout, some of these long sections gave distinct evidences 

 Stratification, of Stratification. Thus at Station 10 in the Bay of Biscay, at a 

 depth of 2567 fathoms, the sounding-tube brought up a section 

 about five inches in length, of which the upper portion to the 

 depth of about three inches was of a uniform fawn colour, 

 representing apparently an ordinary Globigerina ooze with 

 66 per cent of calcium carbonate, while the lower inch or two 

 had a mottled appearance, with light and dark brown patches, 

 the dark brown material giving only ;^2> P^^ cent of calcium 

 carbonate when analysed. At Station 49 C, from a depth of 

 2966 fathoms, the sounding-tube brought up a section about 

 fourteen inches in length, showing distinct traces of stratification, 

 especially towards the upper end, although the lower end 

 presented a mottled appearance with patches of lighter and 

 darker brown ; towards the upper end there were small patches 



