ABSTRACT FOR THE MONTH OF MAY, 



Meteorological Observations, McGill College Observatory, Montreal, Canada. Height above sea level, 187 feet. 



1891. 



C. H. McLEOD, Superintendent. 



THEKMo.Ml/l II; 



42.46 

 45-43 



' BAROMETER. 



30.248 



=9.967 

 29.976 



S.W. 

 N.W. 

 S.W 

 S.W. 



%£ 





::!1L 



ANALYSIS OF WiiND RECOHD 



Duration in hrs . 



J 364 



Greatest mileage in one hour was 48 on the 

 Greatest velocity in gusts, 66 miles per hot 

 the 1st. 



Resultant mileage, 5«20. 



* Barometer readings reduced to sea-level and 

 temperature of 32° Far. 



§ Observed. 



t Pressure of vapour in inches of mercury. 



X Humidity relative, saturation being 100. 



IT Ten years only. 



The greatest heat was 80.0 on the Kth ; the 

 rreatesi cold was 31.7 on the 5th, giving a 

 range of temperature of 48.3 degrees. Warm- 

 est day was the 21st. Coldest day was the 5th. 

 Highest barometer reading was 30.312 on the 

 20th ; lowest barometer was 29.608 on the 1st, 



giving a rang 



of 0.704 inches. 



humidity wa 



99 on the 9th. 



humidity wa. 



25 on the 13th. 



Rain fell od 



12 days. 



Snow fell 



1 1 day. 



Rain orsno 



w fell on 12 days. 



Rain and se 



ow fell on 1 day. 



Hoar frost 



n 2 days. 



