271 
1911-12.] Report on Rock Specimens. 
the level of the sea at that time. Although the shelf was in all probability 
drowned prior to the on-coming of the great ice-sheet, yet during its 
maximum extension the ice must have treated this shallow area as a land 
surface and only ceased at the deep water along the “Atlantic Rise,” 
beyond which the distribution of material would be by floating ice. 
Messrs Cole and Crooke show that a considerable number of glaciated 
A B 
2 
OI23456 f/VCHES 
LlXxJ i . 1— i — I — j — ! — i — I — i — I 
r rrrr ! 1 ' — 1 i 1 1 
O 40 80 120 (60 MM. 
Fig. 1. — Showing relative proportions of specimens embedded in Ooze (white) to 
exposed portions (hatched). A, side on ; B, end on. 
stones occur in their material, and believe that they may represent 
“ distributed moraine material.” * The difference therefore is one of 
degree only. The assemblage of stones in the material examined by 
Messrs Cole and Crooke from their Stations 18 to 22 as shown 
on their mapj- is remarkably like that from Station 95 of the Michael 
Sars, so that the conclusion is unavoidable that there is a distinct 
connection between the distribution of the material in the two adjacent 
areas, both just beyond the edge of the continental shelf. 
* Op. cit ., p. 22. f Op. cit., pp. 21-26. 
