1800.] Address. 95 



showing that the wind was from south-east, until it reached eavth at 

 6*5 p. M., a few miles to the east of Baraset." 



" This would appear to shew that in the middle of April the souther- 

 ly current was deeper than in the middle of March by about 1,000 feet, 

 and that in April its depth is at least 3,000 feet. 



" It is clear, therefore, that a series of balloon ascents, during which 

 proper meteorological observations were made, would yield most valuable 

 results in extending our knowledge of the air-currents in India." 



Two papers by Mr. S. A. Hill, Meteorological Reporter to the 

 Government of the N.-W. P., have been published in our Journal since 

 my last address. In one of them he gives a number of observations 

 with a Regnault's psychrometer and draws from them the practical 

 conclusion that Regnault's modification of August's pSychrometric 

 formula is not likely to be improved upon, and that if we want the diy 

 and wet bulb thermometers to indicate the humidity correctly at times 

 when there is no wind, they ought to be ventilated artificially at the 

 time of observing. The other paper, on the Tornadoes and Hail- 

 storms of April and May 1888, iu the Doab and Rohilkhand, was 

 noticed in last year's Address. 



At the December meeting, an interesting paper was presented by 

 Mr. J. Eliot on the occasional inversion of the tempei'ature relations 

 between the hills and plains of the Northern India. The paper deals 

 with a peculiar feature of the minimum cold-weather night-temperature 

 in Northern India, which is often higher in the hill-stations than it is in 

 the plains below. The occui'rence of the phenomena and its causes ai'e 

 fully entered into by Mr. Eliot. It may briefly be said that a flow of 

 cold air from the hills to the plains after sunset causes a corresponding 

 displacement of warm air towards the hills. 



Part VI, Vol. IV of the Indian Meteorological Memoirs, is devoted 

 to a very interesting and suggestive paper by Mr. S. A. Hill, on tem- 

 perature and humidity observations made at Allahabad at various 

 heights above the ground. The principal point proved confirmed the 

 results given in Mr. H, F. Blanford's paper on the temperature at different 

 heights above the ground at Alipore, among which was the very curious 

 fact that for some distance above the ground, the mean temperature of the 

 air increases on ascending instead of decreasing, as it should do under 

 the ordinary course of events. At Allahabad on the average of the 

 whole year, the temperature increases up to about 155 feet from the 

 ground, and the increase amounts to about 1'5° F. 



The third chapter of the revised edition of Dr. Loomis' Contri- 

 butions to Meteorology is devoted to a consideration of the mean annual 

 Rainfall for different countric.'; of the globe, and of the conditions 



