ABSTRACT FOR THE MONTH OF JULY, 1900. 



Meteorological OteerTatioPB, McGill College Obaervatory, Montreal, Canada. Height above sea level, 187 feet C K. McZmO. Superintendent. 



■THERMOMETER. 



*EAROMETER. 



29.99 

 30.09 

 '9-9t 

 «9-73 



S.W. 

 S.W. 

 S.W. 



S.W. 

 N. 

 S.W. 







IT59.: 



(.252 



1.252 



lid hicludiiig this 



"ANALYSIS OF WIND RECORD. 



Mian 





8.7 



(Jrcntcel tiiitoHgo i 

 loulhwosl on tlio I8tb. 



Qtoiitoat velocity in Kiists was 

 liour on tlio luh from tlio soulliwcst. 



hour WHS 82 from lliis 



S.W. 



!'39 



Uesultiint miloiiEc, 832l>. 



Rcsnltnnt direction, W. 39.7° S. 



TolnlinilcnBO, n,2a8. 



Avorneo velocity—, 16.19 miles per hour. 



n Wind velocity on the 2nd, .3rJ. I3ih, ICth, 17th 

 nnd 19th, reduced fniiu City Hull Anemometer. 



• Barometer readings reduced to sca-lcvel and 

 temperature 32* Fahrenheit. 



t Mean of bi-hourly readings taken from 

 self-recording instruments. 



1 Humidity relative, saturation being 100. 

 Mean of ob.«ervations at 8, 15, and 20 hours. 



^ 19 years only. ? 14 years only. 



The greatest heat was 87.0 on the 7th: the 

 greatest cold was 48.S on the 1st, giving a rungo 

 of temiieralure of 38.2 degrees. 



Warmest day was the 7th. Coldest day was 

 the 1st. Highest barometer reading was a>.16 on 



the 22iid. Lowest barometer was 29.34 on the »th, 

 giving ranee of .82 inches. 



Minimum relative humidity observed was 43 

 on the 14th. 



Rain fell on 19 .lays. 



Fog on 2 days. 



Tliunderstorms on 5 days— the Sth, lltli,24th 

 2Sth and 29th. 



