JOURNAL 



OF THE 



ASIATIC SOCIETY. 



OCTOBER, 1848. 



Observations made when following the Grand Trunk Road across the 

 hills of Upper Bengal, Pants Nath, fyc. in the Soane valley ; and on 

 the Kymaon branch of the Vindhya hills. — By J. D, Hooker, 

 M. D. R. N. Hon. Member of the Asiatic Society. (Communicated 

 by the Honble Mr. Justice Colvile, President of the Asiatic 

 Society.) 



The following observations were made with the view of instituting 

 a comparison between the vegetation of the various areas, differing in 

 soil, elevation and general custom, which I traversed (chiefly in com- 

 pany with Mr. Williams* of the Geological Survey,) and the climate 

 which accompanied these changes, and to whose operations the distri- 

 bution of species is to be traced. 



The Instruments used were all of the best construction, chiefly by New- 

 man, and were uninjured up to the last observation recorded. Those 

 made with the portable Barometer, may be relied on as very accurate, 

 the instrument having been adjusted for me with extreme care. 



The observations for Temperature were often made where constant 

 shade was not to be obtained. Every precaution was however taken 

 to avoid radiated heat. 



* I here beg to return my most sincere thanks to Mr. Williams, not only for the 

 opportunity he gave me of observing over a very interesting country : but for the 

 many facilities he afforded and the uniform kind assistance I received, both from 

 himself, Mr. Haddon, and the other gentlemen attached to his camp in which I was 

 a guest. Few travellers have commenced their investigations under such favor- 

 able auspices ; and to these much of what value the accompanying observations may 

 possess is due. 



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