ABSTRACT FOR THE MONTH SEPTEMBER, 



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



1891. 



C. H. McLEOD, Superintendent. 



Sunday 13 



THERMOMETER. 



Mean. Max. Min. 



• BAROMETER. 



Mean. § Mas. 



29.999 



30 



-9 

 29 



3° 



023 

 932 

 93» 

 142 



29 

 29 



30 

 30 

 29 



29 

 29 



30 



30 



819 



Mi 

 092 

 2 53 

 952 



796 

 921 

 o37 



765 

 097 



30 

 30 

 29 

 39 



■■V 



pi 7 

 048 

 9U4 

 994 

 8.5 

 095 



29 

 29 

 30 



998 

 732 

 237 



ANALYSIS OF WIND RECORD. 





N. 



N.E. 



E. 



S.E. S. 



s.w. 



w. 



N.W. 



Calm. 





663 



329 



39 



837 819 



2036 



2793 



853 









Duration in hrs . . 



65 



3* 



■4 



,o 87 



128 



217 



90 



■7 



Mean velocity 



10.2 



10.3 



2.8 



12.0 9.4 



.5.9 



12.9 



9-5 





on the th. Resultant mileage, 4175. 



velocity 

 pern our 



Sky Clodded 



* Barometer readings reduced to aea-level and 

 temperature of 32° Far. 



§ Observed. 



t Pressure of vapour in inches of mercury. 



X Humidity relative, saturation being 100. 



^ io years only. 



The greatest heat was 83-5 on the 25th ; the 

 greatest cold was 42.5 on the 30th, giving a range 

 of temp, of 41.0 degrees. Warmest day was the 

 Coldest day was the Highest barom- 



eter reading wae 30.473 on tU» 30th; lowest 



^54-94 



6 Sunday 



13 Sdndav 



37 SUKDAV 



barometer was 29.732 on the 29th, giving a range 

 of 0-741 inches. Maximum relative humidity 

 was on the . Minimum relative humidity 



was on the 



Rain fell on 14 days. 



Snow fell on days. 



Rain or Snow fell on 14 days. _ 



Auroras were observed on 3 nights. 



Hour frost on days. 



Lunar hals on 2 nights. 



Lunar corona on the 



Fog on 5 days. 



