GEOLOGICAL EANGE 253 



the genera Verneuilina, Bolivifia, Nodosaria, Pul- 

 viniilina^ and JRotalia. This blue clay of the 

 Baltic Provinces is now known to belong to the 

 Lower Cambrian, for it underlies the Olenellus 

 beds. Other examples of glauconite casts of 

 these organisms had been previously figured by 

 Ehrenberg in 1855, and discovered by him in the 

 glauconitic sandstone near St, Petersburg. The 

 Hollybush Sandstone of this country, also of Lower 

 Cambrian age, often largely consists of bright green 

 glauconite casts of Foraminifera, embedded in a 

 ferruginous and argillaceous cement, the casts 

 resembling small forms of Glohigeriua. Evidence 

 of an old foraminiferal fauna has been brought to 

 light in Southern New Brunswick by Messrs. W. D. 

 and G. F. Matthew, who discovered these micro- 

 scopic fossils in the Arcadian or lower division of the 

 St. John's series. They have been referred by the 

 above authors to the genera Glohigerina and 

 Oy^hulina. 



The Cambrian strata of Siberia have, according 

 to De Lapparent, lately yielded foraminiferal remains 

 in some abundance in the limestones of a plateau 

 traversed by the Olenek. 



An interesting discovery of an Upper Cambrian 

 foraminiferal fauna in a shaly limestone near Chase 

 End Hill, in Shropshire, was lately made by Professor 

 Groom, and the organisms have been described by the 

 writer. The collection comprises a number of genera 

 with hyaline tests which are very well preserved, the 

 tubuli of the shell-wall appearing quite distinctly in 



