Correspondence — Mr. A. B. Wynne. 429 



which have been deposited in the areas surrounding the reefs. These 

 dolouiitic reefs are mostly poor in fossils, hut the author attributes 

 their deficiency in this respect to the same causes which have 

 brought about the obliteration of organic remains in recent coral 

 reefs. The numerous sections figured and described, in which 

 mechanical deposits of tuff and other materials rest on, and occasion- 

 ally dove-tail into, the steep slope of the reef-like walls of pure 

 dolomite, are strong evidence of what the author puts forward as 

 the main object of this work to prove — the contemporary formation of 

 these deposits of such cliffei"ent characters in the period of the Trias. 



The concluding chapter treats of the periods at which the different 

 dynamical forces have operated to produce the present mountain 

 ranges, and the principal direction of the various dykes and faults. 



The maps accompanying the book are drawn to the scale of 

 f-rooo-, and no fewer than 47 different geological divisions are in- 

 dicated on them in different tints. The photographs are produced 

 by the Albertotype process, and give an excellent idea of the 

 physical characters of this Alpine region. This work merits the 

 study not only of those who purpose themselves to visit the region 

 described, but of every student of geology. H. 



C O le-IRIE S IE 3 O ZCsTIDIE IETC IE . 



RECENT PUBLICATIONS OF THE GEOLOGICAL SURVEY OF INDIA. 

 Manual of the Geology of India, Introduction, chapters xx. and xxi., by 



W. T. Blanford, Esq., F.R.S., etc. 

 Palseontologia Indica, Series XIII., Salt Range Fossils, by Dr. ~W. Waagen. 



Sir, — Being the person to whom the geological examination of 

 the Upper Punjab, as well as the Salt Eange, has been entrusted, I 

 would point out that in the publications above mentioned many of 

 my statements, as recorded in my Salt Range Memoir (Geol. Surv. Tnd. 

 Mem. vol. xiv.) and other papers, have not been accurately reproduced. 



In the Manual, although chapters xx. and xxi. are said in a foot- 

 note (p. 480) to be " chiefly compiled from data furnished by Mr. 

 Wynne's papers, except where the contrary is stated," there are very 

 numerous instances, unaffected by the last clause of this passage, in 

 which the published statements of my memoir are replaced by others 

 with which I cannot coincide. 



So far as mere speculations are concerned, opinions may of course 

 differ widely, but as to statements of fact I adhere to the views pre- 

 sented in my various papers regarding the geology of the Upper 

 Punjab, including the structure of the Salt Range; with which no 

 other officer of the Survey is more fully acquainted than I am myself, 

 while the writer in the Manual has not even seen the ground. 



Throughout the introduction to the lately issued part of the Palas- 

 ontologia Indica, Dr. Waagen repeatedly attacks my classification of 

 the Salt Range Series, giving an even less definite one of his own, 

 and while condemning that which I adopted, never makes the least 

 allusion to the facts ; that mine was based upon the general determi- 

 nations of our Survey palseontologists (and others), of whom he was 



