ABSTRACT FOR THE MONTH OF SEPTEMBER., 1904. 



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



THERMOMETER. 



58.5 

 58.6 

 55-6 



«.6 



Min Range. 



* BAROMETER. 



S.E. 

 N.E. 

 N.E. 



S.W. 

 S.W. 

 N.W. 

 S.W. 

 N.E. 

 S.E. 



N.W. 



N.E. 



S.E. 

 N.W. 



S.W. 



S.W. 



N.W. 

 N.W. 

 N.W. 



N.E. 

 S.W. 

 N.E. 

 S.W. 

 S.W. 

 S.W. 



3-33 





ANALYSIS OF WIND RECORD. 



Direction 



N. 



N.E. 



E. 



S.E. 



S. 



s.w. 1 w. 



N.W. 



Calm. 



Mile 



353 



1756 



'49 



,6. 



H65 



3655 1098 



.<6o 





Duration in hri.. 



36 



■55 



■5 



49 



"4 



166 81 



93 



1 



Mean velocity.... 



9.8 



II. 3 



.0.0 



9.4 



11.8 



15.8 j 13.6 



■5-7 





Uroatost tnilonKo 

 (Irontost volooity 

 llomiltniit iniloiiK 



ml 



111 BUMtS 



0, 2,408. 



,vna 48 



32 uu til 

 11 1 lie 30 



1 30th. 

 h. 





Resultant d 



Total nllr: 



rcctton, 

 0, 9,378. 



S.66°\V. 



•Barometer readings reduced to sea-level and 

 teoj perature 32 a Fahrenheit. 



t Mean of bi-hourly readings taken from 

 self-recording instruments. 



1 Humidity relative, saturation beinz 100. 

 Mean of observations at 6, 15 and 20 hours. 



H 23 years only. \ 18 years only. 



The greatest heat was 74.1'' above zero on the 

 ISth. The ereatost cold was 31.2 above zero on 

 the 23rd, giving a range of temjierature of 

 39-9°. 



Warmest day 

 the 21st. 



Highest barometer reading 

 22nd : lowest barometer was 5 

 giving a range of 1.23 inches. 



Minimum relative humidity observed, 

 on the 6th. 



Rain fell on 15 days. 



Trace of snow on the 21st. 



Thunder on 5 days. 



Earth quake on the 11th. 



the 11th. Coldest day \ 



the 30th, 



! 17 



