100 KHASI HILLS. 



combined labors, and was published in ISoi to accompany the first 

 issue ©f this Report. The small outline Map of a larger area, given 

 herewith, is the result of flying sketch surveys made by myself during 

 trips across the hills to Lakadong, Nonkradem, &c. (a) 



During this second visit, I crossed the hills to Nonkradem, and 

 examined the rocks in that vicinity, and from thence to the plains at Lacat. 

 The season of 1852 was much drier and finer than that of 1851, and we 

 were thus enabled to continue actively engaged in the field until the very 

 day before leaving the hills. On reaching the plains, we immediately 

 proceeded to the field again, so that the results of our labours were un- 

 avoidably put aside, until the return of the monsoon of the succeeding 

 year, 1853, enabled me to devote some time to their collation. The sur- 

 vey of the Khasi hills was then plotted, and the Maps completed, together 

 with a plan on a larger scale of the station of Uherra Poonjee itself. 



The want in this country of books of reference, or collections for com- 

 parison, compelled me, after a preliminary examination, to submit a 

 selection of the fossils collected, for careful examination and description 

 in England. These were unfortunately lost at sea, and, until the data 

 for such comparison can be again procured, any report on the district 

 must unavoidably be very incomplete. It will, nevertheless, be in all 

 probability sufiicient to make known the principal facts in the physical 

 structure of these hills, and to indicate some of the more important 

 economical considerations springing from this structure. 



It was a source of great regret, that, owing to the season of the 

 year during which I visited these hills, I was unable to examine the 

 lower parts of the ridge, where many points of great geological interest 



(a) It includes a large portion of the country, of which a similar sketch Map was con- 

 structed by Dr. J. D. Hooker during his visit to these hills, but is entirely based on inde- 

 pendent data. The Southern portions, including Sylhet, Jynteah, &c., are taken from the 

 Revenue Survey Maps by Capt. Thuillier, and from the sheets of the Indian Atlas. The 

 small plan of Lakadong is from original survey, and was originally published in No. XIII. 

 cf the Selections from the Records of the Bengal Government. 



