Quick studies cf a great number of cores make possible the 
gathering of material for a more detailed study of a specific problem. 
The relationship of deep-sea areas and the neighboring continental areas 
in selected regions can be studied in detail by a comparison of the sedi- 
ments of both areas. The general horizontal and vertical distribution of 
a few selected species of foraminifera within a great number of cores com- 
bined with data on the ec ology of these planktonic animals gives the key 
to the lithogenetic interpretation of older foraminiferal sediments which 
is needed for every kind of continental survey in areas of sedimentary 
rocks, 
Since generalized assumptions on the bottom sediments of the 
Atlantic Ocean based on incomplete data play a big role in numerous 
world-wide geologic problems, it is important to obtain more data as 
rapidly as possible to test these assumptions. A practical example has 
been furnished by the study of the cable break area south of Newfoundland 
(Heezen and Ewing, 1952; Ericson, Heezen and Ewing, 1953), ~~ J 
