

ABSTRACT FOR THE MONTH OF JULY, 1891. 



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







DAY. 



THERMOMETER. 



• BAROMETER. 



t Mean 

 pres- 

 sure of 

 vapour 



t Mean 

 relative 

 humid- 

 ity. 



point. 



WIND. 



Sky Cloudeo 

 In Tenths. 







gg 



| 



Si 

 « 



DAY. 







Mean. 



Max. 



Min. 



Range. 



Mean. 



§ Max. 



§Min. 



Range. 



General 

 direction. 



Mean 



VClmMt) 



in niile> 

 pcrhour 



3 



1 



§ 







3 



Sunday 5 



6 



7 

 8 

 9 



SUNDAV 12 



M 



17 

 18 



Sunday .9 



23 

 24 

 '5 



Sunday 26 



2 



29 



31 



°9-SS 

 64.70 

 66.0S 

 61. 8a 



57-53 



59-95 

 60 95 

 67.03 

 70.50 

 72.97 



77.22 

 75 4 2 

 V-H 

 66 77 

 71-55 

 70.42 



64.85 

 64. S3 

 6SS5 

 69.17 

 67. 38 

 61.05 



59 3= 

 62. S5 

 67.17 

 64.00 



57.00 



83.3 



77-9 



68.1 



62.6 

 64.8 

 68.0 



7o!o 

 80.6 



83.5 



83.0 

 86.8 

 85.6 

 78.0 

 73-0 

 83.0 

 8>-3 



75-3 

 72.1 

 74.4 

 79.8 

 74.0 

 79.1 

 68.0 



67.6 

 68.0 



72.8 

 72.8 



56.5 

 61.3 



59-3 

 58-5 



55-3 

 51-5 

 50.0 

 51.0 

 56.1 

 55.6 

 57-9 



64.8 

 68.5 

 69.7 

 65.9 

 62.3 

 °--3 

 62.0 



57-5 

 55-4 

 53-2 

 65.3 

 6.. 3 

 57-° 



54-5 

 50.4 

 5 2 -5 

 56.0 

 54-4 

 45.6 



26.8 

 6.7 



18.6 

 9.6 



7-3 

 !3-3 

 18.0 

 .9.8 

 19.9 

 25.0 

 25.6 



18.2 

 18.3 



10.7 

 21.7 

 19.3 



15.0 

 14.6 



26^6 

 8-7 

 17 8 



13. 1 

 17.6 



16^8 

 ■ 7.6 

 24.4 



29-978 

 29.796 



i 



S 

 i 



1 

 1 



1 



i 



29.989 

 30.013 



29.928 



29 

 29 

 29 



29 



.919 

 ■9=7 

 .712 

 .568 



!oB6 

 .216 



•■34 



!208 



.139 



!o68 



.0S1 

 .,56 



.151 



.'128 

 .163 



• 323 



■'33 



•>59 

 .166 



:°J8 



.083 

 .168 

 .130 



.5165 

 ■5623 

 .5280 

 .4867 



-355 a 



.3970 

 .3222 

 ■4075 



■5^47 

 .6305 



■ 5642 



.4720 

 . .5020 

 •4477 



■3978 

 ■3482 

 .3998 



■5747 

 .4032 



■ 3225 



■4783 

 ■3399 



74.1 

 92.0 

 83.8 

 88.0 



6 9 !b 

 74-7 

 51.5 

 55-2 

 56.7 



63 !J 

 72.5 

 72.5 

 72.0 



64 8 

 63.0 



57-5 

 S9-3 

 80.5 

 86.3 

 74-5 



63's 

 71.2 

 72.8 

 81.2 

 73-5 



59-7 



62.3 



58^ 



49-5 



52-7 

 47-7 

 53-3 

 56.5 



63.6 

 65.5 

 62.0 

 57-3 

 58-7 

 55-7 



52-5 



52-3 

 63.0 

 62.8 

 53-° 



53-3 

 57-5 

 57-7 

 48.1 



S.E. 

 S. 

 S. 

 S. 



s. 



s.w. 

 w. 

 w. 



N. 



S.W. 

 S.W. 



s.w. 

 s.w. 

 s.w. 

 s. 

 s.w. 

 s.w. 



S.E. 



s.w. 

 s.w. 



N. 

 S.E. 



S. 

 S.W. 

 N.W. 



S.W. 



s.w. 

 s.w. 



S.E. 

 SE. 

 S.W. 



9-3 

 9-8 



16. 1 

 18.7 

 ■3-5 

 12.4 

 "■3 

 14.6 

 18.0 



18.6 

 17-7 

 17.6 



14^8 



.4.6 

 "■5 

 7-3 

 7 9 



62 



12.7 

 9.8 



11. 7 

 8.2 



16.8 



14-7 



5-8 

 8io 



7-5 



•■'■5 

 7.0 



3-7 

 9-3 

 7.8 

 6.7 

 0.3 

 8.2 



7.8 

 2.3 



sy. 



9.0 

 6.2 



' 4 .'8 

 3-8 



8.0 

 4-3 



3 



8 



9 

 9 

 9 



7 



3 

 3 



78 

 40 

 03 



82 

 75 



96 



80 

 43 

 39 

 15 

 97 



60 

 37 

 97 

 76 



49 

 94 

 53 

 67 

 iE 

 73 



0.13 

 0.41 

 0.19 



0.55 

 o!o6 



o.'oo 

 0.14 



0.25 



0.13 



I" 

 o!io 





0.13 



0.19 



0.55 



0.06 

 0.23 



o.'oo 



0.14 



o.=5 

 0.3,4 



13 



0.50 



3 

 4 







29.767 

 29.840 

 29.850 

 30.077 

 30.194 

 30.152 



29.906 

 29.9^1 

 30. 109 

 30.232 

 30.230 



29 



2g 

 29 



30 



30 



29 

 29 

 29 

 29 

 29 

 29 



.767 

 .785 



.151 

 .074 



■877 



.809 

 .076 

 ■799 

 986 

 .694 



6 

 7 

 8 

 9 



" SONDA, 



■3 

 ■4 

 i5 

 16 

 17 

 ■8 







29.940 



29-734 

 29.871 

 30 013 

 29.864 



29.R84 



29.962 

 30.046 

 30.017 







30.1225 

 30.2963 

 30.2575 

 30.0768 



30.171 



30.357 

 30.149 

 29.976 



30 

 3° 

 29 



.038 



143 

 .990 

 .810 



»3 



=5 



26 

 27 



29 



31 







29.889 



1 



J 



29 



.866 







29.911 

 29.889 

 29.912 

 29.785 



29.956 



29 . 909 

 29.957 

 29.870 

 29.917 



29 

 29 

 29 

 =9 

 29 



.SS6 

 .S61 

 •874 



■787 







Mea ° s 



66. 31 



74.8 



57-8 



17.0 



29.9401 







.131 



.4564 



70.9 



55-9 



S.34." W. 



13.0 



5-7 1 







52.9 



4.80 





4.80 



S"™ 







17 yrs. means for & 

 including this mo. 



6S.S3 



77.2 



60.8 



.6.4 



29.8874 







•■39 



• 4979 



70.8 









5-4° 







IIS8.5 



4.19 





4.19 



17 yrs. means for and 

 including this month 













ANALYSIS OF WIND RECORD. 



* Barometer readings reduced to sea-level and 

 temperature of 32° Far. 



§ Observed. 



t Pressure of vapour in inches of mercury. 



{Humidity relative, ?at ur;it i"ti Iteing 100. 



IT 10 years only. 



The greatest heat was 86.8 on the 13th; the 

 greatest cold was 45.6 on the 31st, giving a 



giving a range of 0.789 inches. Maximum relative 

 humidity was 97 on 4 days. Minimum relative 

 humidity was 33 on the 9th. 



Rain fell on 20 days. 



Thunder storms on six days, and lightning with- 

 out thunder on two days. 







Direction 



N. | N.E. 



E. 



S.E. 



g. 



s.w. 



W. 



N.W. 











290 | 1 7 2 



44 



1103 



2002 



4672 



.122 



299 















Duration in brs . . 



26 



20 



7 



88 



.58 



320 



9' 



3' 









Mean velocity.-. . 



8.6 



6-3 



12.5 



12.7 



14.6 



12.3 



9.6 









Greatest mileage in one hour was 2S on the 15th. 

 Greatest velocity in gusts 32 miles per hour on the 



Resultant mileage, 6590. 

 Resultant direction , S. 34.° W. 

 Total mileage, 9704. 



est day was the 13th. Coldest day was the 31st. 

 Highest barometer reading was 30.357 on the 

 22nd; lowest barometer was 29.568! on the 4th, 















