242 Canadian Record of Science. 



Book Keview. 



On the Cambrian Formation of the Eastern Salt Range of 

 India.— By Dr. Fritz Ncetling, of the Geological Survey of India. 

 Records of the Geol. Surv. India, vol. xxvii., Part 3, pp. 71-86, 

 August, 1894. 



From researches made in the palaeozoic rocks of the Eastern 

 Salt Range of India by the Geological Survey of that country, Dr. 

 R. D. Oldham has gathered l together most of the evidence obtain- 

 able regarding the succession of Cambrian strata in this region. 

 Lists of fossils accompany the description of these lower palaeozoic 

 rocks, and include such genera as Olenellus, Hyolithes, Conoceph- 

 alites, and Neobolus. Yet, the natural succession or proper interpre- 

 tation of the relations of the older palaeozoic zones had not been 

 determined. In this paper, Dr. Ncetling gives a resume of the 

 result of his recent explorations and researches in the Salt Range. 

 He separates the upper and middle portion of the palaeozoic from 

 the lower and Cambrian proper. 



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

 late Dr. Stoliczka, by Dr. Waagen of Vienna, Dr. Wartte, Mr. 

 Middlemiss and Mr. Datta, he states that the Cambrian of the 

 Salt Range of India is divisible into four groups, in descending 

 order, as follows :— 



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. 



We note here that Dr. Ncetling has found "that at the top of 

 the Khussak formation a fauna occurs, which is most likely the 

 equivalent of the Olenellus of other countries, while for those fauna 

 below it, no representative can be found in the Cambrian of other 

 countries." 2 The Khussak group is itself sub-divided as follows in 

 descending order : — 

 V. Olenellus zone. 

 IV. Neobolus Warthei zone. 

 III. Upper Annelid sandstone. 

 II. Zone of Hyolithes Wynnei. 

 I. Lower Annelid sandstone. 



In the next higher group, the " Jutana group," Dr. Ncetling has 

 found the following succession in descending order : — 

 X. Upper magnesian sandstone. 

 IX. Upper passage beds. 



VIII. Middle magnesian sandstone. 



1 Manual of the Geology of India, Caloutta, 1893, Chap. V.» p. 113 et seg. 



2 Loc. cit. p. 79. 



