ABSTRACT FOR THE MONTH OF APRIL, 1899. • 



Meteorological Observations, McGill College Observatory, Montreal, Canada. Height above sea level, 187 feet, C. H. McLKOD, Superintendent. 





THERMOMETER. 



*BAROMETER. 



tMesn 

 pressure 

 of vapor. 



humid- 





WIND. 



IN Tfnths. 





.5 



_ 



^i~ 



= 





UAV 



















Dew 

 Point. 





Mean 







. 



Hi 



ij 



= 1 



. 6 





DAY. 





Mean. 







Range. 



Mean. 



§Max. 



§Min. 



Range. 





iiy. 





direction. 



in mile' 



5 



S 







57 

 13 



M 





« g 







I 



'9.33 



35.2 



25.0 



10.2 



29.7230 



29.786 



29.677 



.109 



.I22a 



74.8 





S.W. 





8.0 











33.35 



35.9 

 38.6 



27.0 



"3.7 

 II. 6 



30.0008 





29.907 



..78 



.■493 



78.3 





S.W. 

 S W. 



25.58 

 i8.f7 















= 







30.085 





3 





4 





3|.3 





9-3 



30.i;o2 



30.187 



30.085 





.1105 



65.3 





N.W. 



13.58 













96 

 96 









-t 







30. .| 





21.5 





30 3337 



30.379 



30.187 



.192 





66 5 





N. 



























'3-' 



17.7 



30.3385 



30,409 



30.244 



.■6s 



.1363 



72.7 



25 





8.12 



s 



10 



. 













7 





^'A 







30.0713 



30.244 



29.931 



.313 







28.5 



S.E. 



8.71 



2 



10 



^ 





.... 







ii 











3i.6 





29.5523 



29 931 



29.479 



.452 



.1915 



96.3 





N. 













0.8^ 













31.62 



36.6 



31.0 

 26. 5 





30.0603 









.270 









S.W. 

 S.W. 



21.29 

 16.58 









95 

 94 

 00 



0.7 



0.19 



' 







30,192 







lo 



29 9=2 







36.23 









30 2248 



30.324 









58.8 







8.58 



















13 



36.02 



39.2 



32.5 





7 







29.758 



.366 





80.8 





S.E. 





10 



10 



■ 









^1 





>3 





47.7 



32.4 



15 



3 



29 8912 



.9.938 





.164 



.2040 



76.7 





S.W. 



17 00 





10 







0.)2 





0. t2 



^■' 











36.3 







29.7588 



29 919 



29.624 



.=95 







37.8 



S.W. 



























46.8 





10 



5 



29.8985 



29.930 



=9.853 



.077 



.1552 



61 2 



28. 2 



w. 





1 2 







a° 







O.ll 



'♦ 







12.28 



48.7 



33.7 

 32.9 



13 

 '5 



8 



29.9950 







..76 



.■37S 







N.W. 



14.04 

 1658 

 7.58 









87 









L 







30.082 





11 











36.1 







30.ii»3 



30.156 





.076 



.i6»o 







N.E. 









88 

 69 















47.47 





34.2 



22 



I 



30.0460 



30 080 



30.008 



.072 



.2227 



66.0 



36.8 



N. 



j'a 



10 











ij 









57.8 









30.0877 



30.099 







.2617 



69.7 











^ 















21 





53-5 



35. 9 



'1 















83 7 







10 C4 









0.05 





05 



20 





SirNMY J3 



49.58 

 54.68 

 SO. 80 

 51.98 

 59.65 

 63.60 



1,42.85 



60.5 

 60.3 



43.9 

 37.5 



u 



6 



8 



30.2032 

 30.1283 



30.260 



30.163 



2y 998 



■ 097 

 .245 



.2873 

 .2392 



77 

 65.7 



43 5 

 38.3 



S. 

 N.W. 



N.W. 





3 » 



7 



° 



98 

 98 









23- 







30.243 





»4 





"5 









3 



=9-9557 



30.015 



29.908 









,8.2 



N. 







10 















11 



65.7 



36.0 



29 



^ 



30.0153 



30.078 

 30.196 



29-940 

 30,078 



:;?§ 



.3083 

 .2528 



81.8 

 64.0 



45-3 



N.W. 

 N. 



9.50 



^8 



.0 

 ° 







72 



o.ll 





0:02 



26 









»3 





30 0740 



30.146 



29.997 



.■49 



.3023 



60.3 





S.E. 



15 21 







■ 



88 

 64 









27 





Su»D,v H 



50.86 



34.93 





"* 



30.0iOD 



30. 120 



3 



0.021 



.1756 





58.3 



48.5 



S. 

 S.W. 



',17, 



4 5 





>-3 



;:oo 





;,■;; 



29 





Htam 











SnNUAV 



[" and includfng ( 





48. 88 



32.56 





29.9634 







67.12 





■ 



s 16.24 5-67 



— 



552.16 



1.37 

 I 63 



1-9 

 5. 48 



■ 63 

 2.19 



f 



Sums, 









d including this 



ANALYSIS OF WIND RECOED. 



• Barometer readings reduceii to sea-level and 

 temperature 32" Fahrenheit. 



§ Observed. 



t Pre?8ure of vapour in inches of mercury. 



I Humidity relative, saturation being 100. 



HIS years only. . 13 years only. 



The greatest heat was b2°.0 on iheSOtb ; the 

 greatest cold wai 21.°5 on the 5th, giving a range 



tive humidity 



tive humidity 



Kain fell 



Snow fell 



was 98 on the 8th. 

 was 41 on the 11th 

 nl3 days, 

 on 3 days. 





l^lrcaion 



N. 

 ■439 



N.E. 

 ■53 



E. 

 353 



S E. 



s. 1 S.W. 



w. 



N.W. 



Calm. 



. I8th and 28th. 





1760 1 3927 



964 



450 







Mtan vtlocUy.... 



~ 



6.95 



33 



46 

 ■4.93 



.5. ' 222 



63 



37 



5 



Lunar halo on 1 n 

 Lunar coronas on 



ght. 

 nights. 





.1 66 ; .7.69 



■5.30 



12.16 







j^^^arca..,t mileaso i„ one hour v,a» 36, on the Resultant mileage, M35 







of temperature of 60.5 degrees. 



Warmest day was the 30tb. Coldest day was 



Thunder 



n30th. 







Ika nth ' ''■ '° ^'""' ^'^ "''''^' !""■ '«"" on I"'"' mileage, 9,733. 



w. 





the 2nd. Highestbarometerreading was30.409oo 















the 6th. Lowest barometer waa 29.479 on the 8th, 























Averag 



ovol 



ooity, 



13 



.OSm-p 



h. 





giving a 



range 



of .930 inches. Ma 





rel 



^- 1 















