HO MIDDLEMISS : PHYSICAL GEOLOGY OF SUB-HIMALAYA. 



upheaval and present features of the Himalaya in their entirety. 

 This memoir is simply concerned with a limited portion of the Sub- 

 Himalaya ; therefore, only so far as those fringing ranges offer 

 evidence in behalf of the great chain shall I trouble the reader at 

 present. 



I presume that every reader of this work has previously made 

 himself acquainted with at least the second part of the Manual of the 

 Geology of India. That being so, he will appreciate the difficulties 

 which surround any generalizations about the earlier history of these 

 remarkable mountains. He will see that without crowding these 

 pages to an enormous extent, and thereby obliterating any clear 

 perception that might be gained, it would be impossible to do justice 

 to all that has been written by former observers. Mr. Medlicott 

 alone has put forward so many possible and probable hypotheses, so 

 many alternative solutions, all of which are of the greatest use to the 

 subsequent investigator, but the greatest torment to the scientific 

 reader who merely seeks for a clear and coherent view, that it 

 would be difficult to discuss the subject thoroughly without reviewing 

 in all their different lights and bearings the issues that he has so well 

 indicated. 



In the remarks that follow, therefore, I shall only point out those 

 deductions concerning the Himalayan range which must certainly 

 follow from the study of the Sub-Himalayan tract. If they coincide 

 with Mr. Medlicott's and other observers' prognostications, well and 

 good : if not, it must be left for a future work to reconcile, uphold, or 

 dismiss them. 



From the description given in Chapter III, of the petrography, 

 Unity of work with there can be no shadow of a doubt as to the 

 that of Mr. Medlicott. gener al identity of the formations with those 

 embraced in Mr. Medlicott's classification. The fact that I examined 

 the Dehra dun previous to setting about the study of my own area, 

 and the fact that our two working grounds adjoin at the banks of the 

 Ganges, make it as certain that the formations of both agree respec- 

 tively as that the individual parts of my own area agree with them- 

 ( 168 ) 



