36 THE OCEAN FLOOR 



vessel "Skagerak" was put at the disposal of the Oceano- 

 graphic Institute for a two months' cruise in the western 

 Mediterranean. In these waters, where the weather is 

 generally fine in the spring, we found within easy reach 



1675 mS B5G /S)^2. /9^S 



£' 5' 10' ^5' 65' 



- 8500 y/?5 ^~| I |~" 



- 755000 i/R5 ? ^ I I 



-'^S0000i^/?5_ 



-S.OOOOOO^/?S. 



■dooooooi//?s. 



Fig. 15. Progress in length of sedi- 

 ment cores 



of good harbors depths five to ten times greater than 

 those accessible in Scandinavian waters. Moreover, we 

 had chances of meeting there with layers of volcanic 

 ash, interfoliating the records of the sea god Neptune 

 with leaves inserted by his colleague and rival, Vul- 

 canus. These and other coarse-grained layers frequently 



