1 852.] Abstract of Temperature and Fall of Rain. 383 



i.iUl 



Abstract of Registers of Temperature and Fall of Rain kept by 

 Medical Officers in different parts of India, by Dr. Lamb. 



My dear Dr. Sprenger, 



I have the pleasure to send you, for presentation to the Society, 

 Abstracts of Registers of Temperature and Fall of Rain chiefly obtain- 

 ed from observations by medical officers of this Establishment or on 

 duty within the limits of the Presidency. 



Coming from such variety of sources it is obvious that perfect reli- 

 ance is not to be placed on them all, and I fear that in some instances 

 the mean temperature is not very accurately set down. But on the 

 other hand many of the Registers sent to the Medical Board, have 

 been kept with great care, and besides the Items I have abstracted, 

 there are minute details of the variations of atmospheric pressure, 

 direction of the winds, and other matters not susceptible of being easily 

 given in abstract. 



The temperature given as the mean is in all cases the mean of the 

 day, i. e. from sunrise or a little before it till sunset, and is from 

 2° to 4° above the mean of the twenty-four hours, as ascertained in a 

 good many cases where I have had an opportunity of making the 

 comparison. 



Calcutta, 20th April, 1852. G. LAMB. 



3 c 2 



