210 



Mr. H. F. Blanford on the 

 TABLE III. (continued). 



[Feb. 26, 



February 26, 1874. 



JOSEPH DALTON HOOKER, C.B., President, in the Chair. 

 The following Papers were read : 



I. " The Winds of Northern India, in relation to the Temperature 

 and Vapour-constituent of the Atmosphere." By HENRY F. 

 BLANFORD, F.G.S., Meteorological Reporter to the Government 

 of Bengal. Communicated by Major-General STRACHEY, R.E. 

 Received May 25, 1873. 



(Abstract.) 



The object of this paper is to describe the normal wind-currents of 

 Northern India, and their annual variation, and to trace out their origin 

 and causes, so far as these can be discovered in the local physical 

 changes of the atmosphere. After referring to the data on which his 

 conclusions are based, the author goes on to describe the winds of the 

 principal geographical regions of North India in detail. 



PART I. Description of Winds. 



1. The Punjab. As a rule currents from the westward predominate on 

 an average throughout the year ; and this is also found to be the case iu 

 other parts of North India. In the most northern part of the Punjab, 

 westerly winds prevail in the cold and hot dry mouths, easterly in the 

 rainy months. In the central districts northerly winds preponderate 

 over southerly, having iu the cold mouths a westerly tendency, but 

 drawing rouud to the north-east as the hot w r eather comes on, while as 

 the raiuy season sets iu the winds tend to east and south-east, returning 

 to west after the raiu ceases in September. In the southern part of the 

 Punjab (aud this is also the case hi Sindh) easterly winds never prevail, 



