ABSTRACT FOR THE MONTH OF JULY, 1904. 



Meteorological Observations, McGill College Observatory, .Montreal, Canada. Height above aea level, 1S7 feet. C. H. McLEOD, Superintendent. 



!■■, ... I II,. Lull.,;. 



THEKMDMLTr.k. 



i BAROMETER. 



N.W. 

 N.W. 

 N.W. 



N.W. 

 N.W. 

 N.W. 

 N.E. 



N.E- 

 N.E. 

 N.W. 



ANALYSIS OF WIND RECORD. 



Direction 



N. 



N.E. 



E. 



S.E. 



S. 



S.W. 



W. 



N.W. 



Calm. 



Mile. 



1)0 



ySo 



449 



a; 



18 





4*33 



M7 > 





Duration in lira. . 



"4 



5» 



7> 



3 



' 



.... | 43a 



■49 



" 



Mean velocity.... 



7-' 



5* 



6.3 



0..O 



9.0 



9.8 



9-9 





UroiitestiuileiiRB 

 UreateHtvolooity it 

 lteiiiltiitjt mileage, 



ouo hour v 



■Barometer readings reduced 10 sea-level and 

 temperature 32 fl Fahrenheit. 



I" Mean of bi-hourly readings taken from 

 self-recording instruments. 



; Humidity relative, saturation being 100. 

 Mean of observations at &, 15 and 20 hours. 



H 23 years only. ( 18 years only. 



The grearest heat was 90.1° above zero on the 

 19th. The greatest cold was 49.5 above zero on 

 the 3rd) giving a range of temperature of 40-6°. 



Wannest day was the 19th. Coldest day was 

 2nd. 



Highest barometer reading was 30.18 on the 

 4th; lowest barometer was 29.44 on the 12th, giv- 

 ing a range of .74 inches. 



Minimum relative humidity observed, was 43 

 on the Sih. 



Rain fell on 17 days. 



Thunder on 5 days. 



