ABSTRACTS AND DISCUSSIONS OF PAPERS 161 



The author concludes from these observations on the influence of the char- 

 acter of the bottom on living faunas that the paleontologist should, instead of 

 expecting the same type of fauna in synchronous deposits of widely unlike 

 Iithology, look for faunal contrasts in which the faunal facies varies as widely 

 as the lithologic facies. 



