'-'.'it' /'.'. .)/. Kindle — Criteria of Continental Deposits. 



criteria for their recognition other than the occurrence of 

 terrestrial fossils. The difficulty of furnishing entirely conclu- 

 sive criteria for the discrimination of continental deposits is 

 sufficiently indicated by the fact that the best general discus- 

 sion of the subject which has appeared* expressly disclaims 

 " the purpose to offer here criteria for finally and definitely test- 

 ing the origin of any particular formation.'" Instead of depend- 

 ing upon any particular kind of bedding and the absence of 

 organic remains as evidence of nonmarine conditions of deposi- 

 tion, the writer would urge the necessity of finding terrestrial 

 or nonmarine fossils. It is true that procuring this kind of 

 conclusive evidence often requires much hard work and some- 

 times long suspension of judgment till the evidence is secured. 



But a conclusion based on such evidence is worth waiting for. 



i 



*Barrell, Joseph, Jour. Geology, vol. xiv, 1906, p. 447. 



