510 Scientific Intelligence. 



An historical sketch of the work done by Mr. Wynne, by the 

 late Dr. Stoliczka, by Dr. Waagen of Vienna, by Dr. Warth, 

 Mr. Middlemiss and Mr. Datta is then given. Dr. Noetling di- 

 vides the Cambrian of the Eastern Salt Range of India into four 

 groups which are in turn divisible into a number of zones or hori- 

 zons. These four divisons of the Cambrian are as follows : 



In descending order : 



4. Bhaganwalla group, or Salt Range pseudomorph zone. 



3. Jutana group, or Magnesian sandstone. 



2. Khussak group, or Neobolus beds. 



1. Khewra group, or Purple sandstone. 



No fossil remains have yet been found in the Khewra group — 

 but the Khussak group has yielded an interesting fauna divisible 

 into five distinct zones at the top of which is the " Olenellus zone " 

 so that there are four zones of fossiliferous strata below this 

 Olenellus zone which may be termed pre-Olenellus zones. — These 

 are the five zones of the Khussak group, in descending order : — 

 V. Olenellus zone. 

 IV. Neobolus zone. 

 III. Upper Annelid sandstone. 

 II. Zone of Hyolithes Wynnei. 

 I. Lower Annelid zone. 

 In the "Jutana Group" — above the Khussak group Dr. Noet- 

 ling ascertained the following succession of strata in descending 

 order : — 



X. Upper Magnesian sandstone. 

 IX. " passage beds. 

 VIII. Middle Magnesian sandstone. 

 VII. Lower passage beds. 



VL " Magnesian sandstone. 

 In the Lower Magnesian sandstone, Dr. Noetling obtained a 

 species of Stenotheca which he correlates with Billing's species : 

 Stenotheca rugosa, var. aspera and an obscure Lingulella. That 

 author has not attempted to make a critical examination of the 

 fossil remains collected during the exploi'ation but with the sanc- 

 tion of the Director of the Geol. Surv. of India these were sent to 

 Dr. Waagen for determination. We are all anxious to hear the 

 results of Dr. Waagen's observations inasmuch as a considerable 

 proportion of the fauna is a pre-Olenellus fauna. Dr. Noetling is 

 apparently satisfied to class all these sedimentary deposits under 

 the term Cambrian without adopting any new term to include the 

 pre-Olenellus fossils. h. m. a. 



2. The Mineral Industry, its Statistics, Technology and Trade 

 for 1893; Annual, Vol. II. Edited by R. P. Rothweix, 8°, 

 xlii + 894pp. Scientific Publishing Co., New York. — The com- 

 pilation of this voluminous year-book is the result of the develop- 

 ment of the annual statistical numbers of the Engineering and 

 Min ing Journal. 



The volume under consideration contains a vast amount of 

 statistics concerning the production and value of the mineral 



