INTRODUCTION. 5 



In the following pages, Part I has been devoted to a detailed 

 How the present description of .all the impressions ar.d effects of 

 work is divided. the earthquake as recorded both by the officers 



specially deputed to examine it, and also by the local observers 

 through the medium of the earthquake -forms. It is divided into 

 four chapters as follows : — Chapter I contains a description of the 

 larger of the two epicentral areas, namely, that of the Kangra Valley 

 and Kulu. For this I have trusted mainly to my own observations 

 during ray two months' tour through the region ; only supplementing 

 it by evidence derived from the earthquake-forms and from newspaper 

 reports. Chapter II contains a description of the smaller epicentral 

 tract of Mussoorie and Dehra Dun. For this the reports of Messrs.. 

 Simpson and Hallowes have been of first importance, supplemented as 

 before by evidence from the earthquake-forms and newspapers. Chap- 

 ter III contains a description of the area embraced by the large cities 

 of the plains in the vicinity of isoseismal No. 7. For this Mr. 

 Pascoe's report has been of first importance, supplemented as before 

 by the earthquake-forms and newspapers. Chapter IV contains a 

 description of the remaining areas where the earthquake was sensibly 

 felt. For this the material at my disposal has been entirely derived 

 from the earthquake-forms, newspapers, etc. Part II is divided into 

 two chapters, the first of which under seven sub-headings discusses 

 certain of the more prominent features of the earthquake as embodied 

 in the earlier descriptive part, and attempts to generalise concerning 

 them. The last chapter is devoted to the foreshocks and aftershocks 

 of the big event 



A word or two is perhaps necessary on my part in explanation of 

 Delay in publka- the delay which has occurred in the compiling of 

 tion - this memoir. It was interrupted by a period of 



six months leave to England in 1906, and later by a year's charge of 

 current duties in the office of the Survey, duties which every year 

 become heavier and leave little time, except holidays and overtime 

 for original or compilatory work. Concurrently during this period I 

 had charge of the Central India and Rajputana field party, and was 



