Book Review. 243 



VII. Lower passage beds. 

 VI. Lower magnesian sandstone. 

 In the lower magnesian sandstone Dr. Noetling obtained a species- 

 of Stenotheca, which he correlates with but little doubt with Bill- 

 ings' species ; Stenotheca rugosa, var. aspera — and an obscure Lingu- 

 lella. The fossil remains collected during the exploration have 

 been sent to Dr. Waagen for determination, and we are all anxious 

 to hear what forms occur in the pre-Olenellus zones of India. One 

 thing is evident, viz. : that there seems to be no new division or 

 system to be created below the Cambrian in which to include the 

 primordial or oldest fossiliferous strata. 



H. M. Ami. 



