1897] MICROSCOPICAL JOURNAL. 91 



ings, which is labelled as from 1950 fathoms, contains 

 in it : 



Actinocyclus ehrenbergii, J. R. 



Actinoptychas undulatus, G. G. E. 



Arachnoidiscusehrenbergii, J. W. B. 



Biddulphia aurita, L. 



Choetoceros gastridium, C. G. E. 

 monicse, A. G. 



Coscinodiscus patera, C. 



umboniatus, C 



Denticnla palcea, N. 



Fragilaria pacifica, 8. G. 



Grammatophora tropica, F. T. K. 



Podosira hormoides, M. 



Syuedra jeffreysii, G. D. 

 The same forms are to be found in the Neocene of Cal- 

 ifornia whenever it has been examined, from Crescent 

 City in Del Norte county on the north to a spot about 

 forty miles south of the southern limit in Southern Cali- 

 fornia, tliat is to say into Mexico. They are the same 

 in the infusorial earth of the Atlantic Coast of North 

 America, and likewise in South America when it has 

 been detected at Payta and Mejillones in Peru. In North 

 America it is known as Miocene territory and is seen at 

 Atlantic City in New Jersey, at Richmond in Virginia, 

 at various points in Maryland, as at Nottingham, and at 

 Tampa Bay in Florida. It is likewise known at Oran in 

 Africa, at Moron in Spain, at Mors in Denmark, at Cata- 

 nisetta in Sicily, at Simbirsk in Russia, and at Senz Peter 

 in Hungary. Besides, it is known at Netansi in Japan 

 and Oamaru in New Zealand. 



And what does this bring us to ? We have to compare 

 the forms of Bacillariria, Rhizopoda and Foramenifera of 

 these different localities and we find them essentialy 

 the same in all. We have also to compare the forms of 

 Bacillaria, Rhizopoda and Foramenifera of the soundings 

 in the Pacific and Atlantic oceans and we find them the 

 same. Can we not say that the strata are the same in 

 composition cheviically and the same in organic forms? 



