ABSTRACT FOR THE MONTH OF APRIL, 1900. 



Meteorological Observations, McGiU College Observatory, Montreal, Canada. Height above sea level. 187 feet. C. H. McLEOD, SuperintendenU 



- — = — ■ 



THERMOMETER. 





*BAROMETER. 





JMeaa 



a WIND. 



^ » u 



IJ 



-- „• 



= E 





DAV 



















relative 

 humid- 



General 



velocity 



"il 





n 







Mean, 



Max. 



Min. 



Range. 



Mean. 



Mas, 



Min. 



Range. 



ily. 



direction. 



in miles 





S5 





"s 





S„»„»Y 



3S-09 



40-3 



11 



J 



lo 



9 

 7 



29.86 

 29.94 



29-90 

 30-00 



29.83 

 29-87 



-07 



84 

 96 



N.W. 



S. 



11 



6 



60 



36 





OI06 



I SllNUAV 



i 



35-85 

 31-49 

 36.90 

 42.33 

 40.99 



III 

 43.0 



33 



36 

 33 



3 





7 

 3 

 9 



29-99 

 30.00 

 29.80 

 29.68 



30.14 

 30.14 

 29-85 

 29.78 



29.76 



-38 

 -3. 

 .09 



90 

 89 

 70 



w. 

 s w. 

 w. 



N.W. 



•7 



J 



48 

 61 

 87 

 90 



:'.". 





°'" 



6 





30.65 



37-09 

 36.29 

 3S.94 



37-7 

 40,0 



32 

 33 

 32 



9 

 7 



I 

 8 



'3 



9 



3 

 3 



29.74 

 29-90 



30 -.2 



30.. 7 

 29.89 

 29.80 



29-8» 

 30-00 



30.06 

 29.94 



• 9.66 



29.98 

 30.27 

 30.06 

 29-79 



.18 

 ..5 

 .32 



!is 



89 

 92 



i 

 96 

 90 



N.W, 



w. 



S.W. 



S.W. 



E. 



S.W. 

 S.W. 



6 

 9 

 •3 

 24 



5 



78 



28 

 85 

 03 



09 



o!i6 



.°:' 



0.16 

 0-06 





S„™.v 8 



9 



13 



9 



13 





41.62 



49 • 





6 



il 



5 



30.19 



30.3. 



29-94 



•37 



65 



S.W. 



■9 



1 



98 















iC 





52. 5 





9 







30-4" 



30-48 



30-3. 



'30 



78 



S.E. 



■3 



4 



66 



o.'oi 





;.■»; 



•7 



',B 



54 79 



6a T 



44 







H 



29.85 





29.77 



.35 







30 



. 











la 



'9 





^?:- 







.8 



5 



3 



29.80 

 30.13 



29 97 

 30.20 



29.72 

 29.97 



.23 



69 



S.W. 



25 



3 



96 

 80 



°'.°! 





0.07 





21 



61.01 



72.7 





» 



»3 



9 



30.04 



30.. 4 



29.94 



.20 



70 





.4 











21 



Si J 



53 47 



60.8 



44 



6 



16 



J 







29.91 



.06 



76 



S.E. 



8 



4 



00 



01 





0.01 



22 Sunday 



33 







43 





18 



3 





29.96 



29.86 



.10 









. 



12 



0.30 







23 



'4 



46.46 



S4.0 



37 





lO 



J 



30.06 



30.15 



30. .8 



29.97 

 30.04 





" 



N.W. 



20 



° 



99 









35 



26 





56.6 





8 



■ 6 









29.81 





46 





































29.88 





^9.85 



•07 



p 





.4 



9 



09 



0.00 





0.00 



27 



26 



47.63 



53.> 



40 



3 







30.03 



30-.. 



29.92 



..9 



<>5 . 





..-7 



45 



0.00 





0.00 









66.6 



3' 



2 





4 







29.81 



.30 



61 



S.W. 



14.0 



97 









^9 Sunday 





55.15 



71-7 



40.6 







29.61 



29.81 



29.40 



.41 



65 





24 4 



35 







1.46 





Mem 



43.43 





35-68 



15-07 



29 97. 



30.08. 



29 870 



.2.1 



76.0 



S. 68.5° W. 



.6.52 



■.39 



0.7 









































t36 Years meansfor 



for and including > 

 Oils month ] 







32.67 





29.964 

























47-47 1 ,-„ 

























f month. 



a ANALYSIS OF WIND RECORD. |L 



• Barometer readings reduced to sea-level and 

 inrerature 32° Fahrenheit. 

 1 Humidity relative, fiaturation being 100. 



Rain fell on 15 days. 

 Snow fell on 5 days. 

 Rain or snow fell on 17 d 



























Wtmion 



N. 



N.E. 



E. 



S E. 



S. 



S.W. 

 4324 



\ 



If. 

 367 



N.W. 



CAl.^ 



M 



ean from obaervations at 8, 15, and 2t) hours. 



1 W years only. ? 14 years only. 



The greatest heat wn.s 72.7 on the 21st; the 

 eatest cold was 21.9 on the 9th, giving a range 

 temperature of 50.8 degrees. 



Warmest day was the 21st. Coldest day was 

 e 9th. Highest barometer reading was 30.-18 on 



Lunar halo on the 16ih. 

 Lunar corona on tho 9th 

 Fog on the 2nd, 3rd, 12th 

 29th. 





Mile. 



907 



46 



420 



..57 



2i62 





, 16th, 17th. 23rd. and 



Ouraiioii ill hrs.. 



73 



46 



81 



38 



21. 



78 



.47 



BT 





Mean velocily.... 



1.J4 7.0' 



9 "3 



.-43 



.-34 



2.05 



..75 



'•95 













tl 





. .'?".W»," "olooily in BUsls, '18 milos por liou 



Tolai mileinte. 



11,897 



a 



e 16th. Lowest barometer was 29.40 on the 30th, 

 vine a range of l.OSini-hes. 













Minimum relative humidity observed was 34, 







UoaulUnt iiii 



0W6, 3 



2», 































a the 26th 



















