







Mleteorolo 



gic 



al 



il, Can 



Abstract for t 



he Y 



ma L 



ear 



1898 













Observations made at McGill College Observatory, Montre 



ada. — Height above sea level 



atitude N., 45° 30' 17". Longitude 4" 54° 18-61' W. 

 C. H. MoLEOD, Superintmdent. 



Month. 



Thbbuouktbb. 



• Babometer. 



£ 



s 



i'i 

 g5 





Wind, 



h 



3 q 

 |l 





^1 





^1 



1°'" 



^1 



ill 



11= 





Month. 



S 



U Devia^ 

 tion from 

 24 years, 



i 



a 





1 



1 



1 



g-ng 



Kcaultant 

 direction. 



Mean 

 velocity 



per hour. 





12.94 

 19.81 

 33.95 

 42 84 

 65.77 

 64.80 

 70.. 56 

 67.47 

 S9.89 

 46.99 

 33.97 

 18.65 



+ 0.88 

 t 4.17 

 4- 9.36 

 + 2.69 

 + 1.06 

 - 0.04 

 + 1.65 



S7.3 

 40.7 

 68.3 

 66.6 

 79.5 

 82.3 

 90.4 



-20.9 



-16.3 

 12.9 

 14.1 

 34.5 

 46 

 48.0 

 49,0 

 40.5 

 28 3 

 9,0 



-11.0 



16,73 

 12,27 

 14,04 

 18.17 

 15.65 

 16.31 

 17,88 

 15,06 

 14,83 

 12,81 

 12,19 

 14,82 



29,9978 

 30.0447 

 30,1492 

 29.9554 

 29,9018 

 29,9388 

 29,9853 

 29,8991 

 29,9892 

 30,07.36 

 30,0400 

 29,9406 



30,613 

 30,496 

 30,648 

 30,370 

 30,266 

 30,336 

 30,469 

 30,262 

 30,452 

 30,485 

 30,463 

 30,579 



29,246 

 29,338 

 29.391 

 29,652 

 29,590 

 29,271 

 29.601 

 29,609 

 29,632 

 29,219 

 29,400 

 29,178 



858 

 ,183 

 ,204 

 .164 

 .138 

 .2'19 

 .178 

 ,134 

 ,187 

 ,305 

 ,293 

 ,343 



.0796 

 ,1063 

 ,1536 

 .1740 

 ,3363 

 ,4694 

 ,6494 

 ,5298 

 ,4298 

 ,2829 

 ,1674 

 ,1011 



89.7 

 88,4 

 75,4 

 62,4 

 74,0 

 76,3 

 71.8 

 79.0 

 80,2 

 82.2 

 81,9 

 35,2 



10,5 



17,0 

 26,9 

 30,0 

 46,9 

 66,4 

 60,0 

 60,4 

 53,5 

 41,6 

 28,9 

 14,9 



S. 76J° W. 

 S. 64° W. 

 S.IS" W. 

 N. 44° W. 

 S. 874° W. 

 S. 663° \V. 

 S. 39J° W. 

 S. 24° W. 

 S. 43° W. 

 S. 83° W. 



s. 404° W. 

 S. Sir w. 



15,1 

 16.9 

 17.3 

 13.9 

 11,4 

 11. S 

 12.1 

 12.1 

 13.6 

 13,2 

 16.1 

 18.4 



57 

 72 

 38 

 47 

 61 

 58 

 31 

 6i 

 47 

 63 

 69 

 71 



44.0 



30,7 

 616 

 58,6 

 45.3 

 49.2 

 73.1 

 46.2 

 64 5 

 36.4 

 31.6 

 23.6 



0.67 

 0.56 

 2.56 

 1,00 

 2,62 

 6, -57 

 2,11 

 2,56 

 6,08 

 4,67 

 0.51 

 0.99 



4 

 3 

 10 



6 

 16 

 19 

 13 

 ii 

 2! 

 16 

 8 

 5 



62.7 

 46.3 

 0.9 

 1.7 



'li.'o 



15.7 

 20.9 



21 

 21 

 2 

 4 



'2 



8 

 22 



6.17 

 6.65 

 2.64 

 1.15 

 2.62 

 6,57 

 2,11 

 2,66 

 6.0s 

 4,57 

 2,15 

 3.20 



3 



1 

 1 



'2 

 2 

 1 



22 



23 

 11 

 10 



15 

 19 

 13 

 22 

 22 

 16 

 14 

 26 



January 



February 



March 



April 



May 



June 



July. 



August 



September 



February 













September 



+ 1.34 9U.3 



November 



Deoembor 



+ 1.46 

 - 0.29 



66.8 

 41.9 



November 



December 



Rums for 1898 . . . 

 Menna lor 4898 . . 



43197 



+ '2.010 







14.98 



29 '9932 







'.iSAl 



,2816 



78,79 



37,'25 



S. 38°W. 



ik'.k 



K.'S 



46.'48 



29.68 



144 



148.2 



80 



44.47 

 3.71 



10 



214 



Sums for 1898 , , . 

 Means for 1898 , , 



Means for 24 1 

 yenra ending > 

 Dee. 31.1818 ( 



41.93 











29,9808 









.4537 



76,18 







a 16.04 



60,2 



§45.81 



28.23 



136 



119.2 



78 



39.93 



16 



202 



Means for 24) 

 years ending > 

 Dec. 31, 1898. > 



1 •Barometer readings reduced to 32° Fall, and to sea level, t Inches of mercury, t Saturation 100. § For 17 years only, a For 12 years only. ^ "+" indicotes that the temperature haa been /iw/icr: "—" that it baa been 

 lomr .than the average for 24 years inolusiva of 1898. The monthly means arc derived from readings taken every 4th hour, beginning with 8 h. m. Eastern Standard time. The anemometer and wind vane are on the 

 summit of Mount Royal, 67 leet above the ground and 810 feet above the sea level. 



The grooteat beat was 90.4° on July 3; the greatest cold was 20.9° below zero on January 30. The extreme range of temperature was therefore lll.°3. Greatest range of the thermometer in one day was 37.''6 on 

 w„ . 4?'^'™''^o°,>^"o^ ^- '.9"'*°™™'="'''^''- The warmest day was J.ily 3, when the mean temperature was 82.°0. The coldest day was January 30, when the mean temperature was 14.°7 below zero. Tho highest 

 oaronieter reading was 30,048 on March 20, lowest barometer reading was 29.178 on Decembers, giving a range of 1.470 inches tor the year. The lowest relative humidity was 30 on April 28 and May 8. Tho greatest mileage 

 tV. il!? r"""™" '""no hour was 6.5 miles on March 13, and the greatest velocity in gusts was at the rate of liO miles per hour on February 1, March 13, September 18 and December 5. The total mileage of wind was 126,378. 

 I no^resultant direction of tho wind for the year was S. 38° W., and the resultant mileage 40,020. Auroras wore observed on 8 nights ; fog on 49 days ; thunder storms on 30 days i lunar halos on 24 nights ; lunar coronas 

 4U nights ; solar halos on 2 days. The sleighing of tho winter commenced in the city on November 11. The first appreciable snowfallof the autumn was on November 10. 



NoTB.— The yearly moans of the above are the averages of the monthly means, except for the velocity of the wind. 



