370 LIEUT.-COLONEL SYKES’S DISCUSSION OF METEOROLOGICAL 
Madras, on the opposite coast of India ; it may be said to cease entirely when the 
Malabar monsoon approaches in May. The S.E. wind, unlike Madras, is little felt 
at Bombay, having blown at 383 hours only during 1843. Few as the occasions 
are on which it blew at Bombay, it would appear to have resulted from the veering 
of the N.E. wind through E. to a point southward of east; a wind strictly from the 
S. is scarcely known at Bombay. The N.W. wind, which is the dominant wind at 
Bombay and the least prevailing wind at Madras, blows at Bombay most in those 
months when it is least felt at Madras, namely, the first five months of the year, and 
in the months of March and April it almost disappears at Madras ; but at Bombay in 
those months it blows at more hours than any other wind blows in any other two 
months of the year, excepting probably theW.S.W. in July and August. In January, 
February, March, April, and up to the third week in May, the wind from the N. to W. 
points blows from eleven to twenty-two hours daily, the remaining hours having the 
wind from the N. to E. points, constituting the land-wind, the N.W. being con- 
sidered the sea-breeze. In part of October, November and December, the reverse is 
the case, the N.E. or land-wind prevailing from thirteen to nineteen hours daily, and 
the sea-breezes appearing between noon and 10 p.m. The suddenness with which the 
prevailing winds commence and terminate is a marked feature in the meteorology of 
Bombay. The wind from the S. to W. points begins suddenly the third or fourth 
week in May, and as suddenly terminates in the first or second week of October. 
The wind from the N. to E. points takes the place of the S.W. wind and terminates 
suddenly in May. The N.W. wind, owing to its being a daily alternating wind with 
the land-breeze, from the heating action of the sun upon the land daily, has a more 
continuous character throughout the year, appearing even in the monsoon months, 
when a few days’ sunshine heats the land ; it is however much less frequent in those 
months than when the sun bears with continued force upon the land. 
Winds at Calcutta. 
With regard to the winds at Calcutta, Dr. J. McClelland, in the fifth volume of 
the Calcutta Journal of Natural History, has given a reduction of the meteorological 
register kept at the Surveyor-General’s Office, Calcutta, from the 31st of October 
1843 to the 31st of October 1844 ; from his paper the following extracts are made in 
a condensed form ; — 
