1834.] 



On the Land Shells of India. 



81 



is a little less than that observed at Benares, but the mean temperature 

 agrees almost precisely with the quotation for that place. 



Table II. — Summary of Pressure and Temperature. 





Barometer at 32°. 



Thermometer. 













^ 



i i _£ 



i o> i n h 



, 









a 

 o 



Average 



monthly al 



titude. 



Monthly 



deviation 



from annua 



mean. 



Mean diur 

 nal oscilla 

 tion eac 

 month. 



Average 

 height with 

 in the hous 



Meanofdai 



ly extreme 



in the ope 



air. 



Monthly 

 deviation 

 from annu 

 al mean. 



u 



B 



S3 



a 



q) — 



^ a 

 2 S 

 2 « 



4i 



nS 



d 



5 





inches. 



inch. 



inch. 







• 















Jan. 



29.698 



+.308 



.111 



60.6 



60.4 



—17.6 





19.0 



e.w. 



Feb. 



.575 



+ .165 



.101 



66.4 



66.7 



—11.3 





23.2 



W. 



Mar. 



.479 



+ .089 



.087 



76.3 



76.1 



— 1.9 





23.9 



W. 



Apr. 



.369 



—.021 



.089 



81.6 



85.2 



+ 7.2 





24.1 



WE. 



May 



.252 



—.138 



.071 



83.7 



85.3 



+ 7.3 





19.5 



E. 



June 



.146 



—.244 



f .068 



86.0 



89.2 



+11.2 





19.1 



E. 



July 



.125 



—.265 



.060 



84.6 



86.7 



+ 8.7 





12.3 



E. 



Aug. 



.173 



—.217 



.070 



83.2 



84.5 



+ 6.5 





9.8 



E. 



Sept. 



.237 



—.153 



.085 



84.3 



85.0 



+ 7.0 





10.5 



E. 



Oct. 



.445 



+.055 



.093 



81.5 



81.5 



+ 3.5 





14.7 



E. 



Nov. 



.570 



+.180 



.090 



78.4 



73.8 



— 4.2 





21.9 



E. 



Dec. 



.614 



+.224 



.080 



63.6 



61.6 



—16.4 





17.7 



W. 



1 



29.390 | 



range 573 



.084 



77.5 



78.0 



rang.28.8 



17.9 





VI. — On the Land Shells of India. By Lieut. Thomas Hutton, 37th Regt. 



Native Infantry. 

 To the Editor of the Journal of the Asiatic Society of Bengal. 



I have the pleasure to send you a few observations on the land and 

 fresh- water shells of India, which I have had the good fortune to col- 

 lect since January, 1832, accompanied by specimens, which will serve 

 better than drawings to shew you the species described. 



I am sorry I cannot at present offer you a greater number of each, 

 as my collection is not very numerous, but should any of those sent be 

 desirable, I shall have pleasure in collecting for you whenever opportu- 

 nity may occur. 



The same offer I would also extend to the Society, did I think I could 

 be of any use in swelling the treasures of their museum. 



Being as yet but a tyro in natural history, and having no works of 

 any great authority by me, I have hesitated in affixing even a generic 

 name to my descriptions, and should these be wrong, I must crave 

 your indulgence and correction*. 



* We have received Lieut. Hutton's Specimens in safety, but have not been yet 

 able to make drawings of them to illustrate his valuable notice : neither have we ven- 

 tured to alter the generic or specific names given to them by the author, which 

 would require greater knowledge of the subject than we possess. They remain, 

 however, open to any future correction. — Ed. 



