ABSTRACT FOR THE MONTH OF DECEMBER, 1900. 



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



THERMOMETER. 



Sunday 33 



*BAROMETER. 



S.W. 

 N.E. 

 N.E. 



83.4= 



1(27.96 



ANALYSIS OF WIND RECOED. 



Direction 



N. N.E. 



E. 



S.E. 



S. 



S.W. 



W. 



N.W. 



Calm . 





330 864 



,.. 



4' 



1048 



»3"6 



5MO 



■n 









Pnrnlion in hrs. . 



S' 63 



5' 



7 



58 



130 



507 



6 



30 



Mean velocity. ... 



6.3 13.7 



8.1 



6.7 



>o.7 



17.9 1 '6.7 



13. S 





tiroatesl lutloiiKO in < 



Kcsiillaiit mileiiKO. 6035. 



Kcsullaiit dirootion, W. 16.7" S. 



Toiulmiloiige, 10,244. 



M-Win.l on the 10th, 17tU and 18th from C 



readings reduced lo sya-level and 

 temperature 32" Fahrenheit. 



t Mean of bi-hourly readitms taken from 

 self-recording instruments. 



Ulumidity relative, saturation being 100. 

 Moan of observiitioiia at S, 15 and 20 hours. 



II 19 years only, g 14 yeara only. 



The greatest heat W!Ls 39-0 on the 24th ; the 

 greatest cold was 124 below zero on the 10th. 

 giving a range of temperature of 51.4 degrees. 



"Warmest day was the 24th. Coldest day was 

 the 10th. Highest barometer reading was 30-61 on 

 the 16th. Lowest barometer was 29.30 on the 

 9th. giving a range of 1.31 inches. 



Minimum 

 1 the 23rd. 

 Rain fell 

 Snow fell 



elative humidity observed v 



24 days. 

 Rain or snow fell on 25 days. 

 Hoar frost on the 16th, 17th and 18th. 

 Lunar Halo on the 22nd. 

 Fog on 4 day. 



