1870.] 



METEOROLOGICAL REPORT. 



11 



The readings are corrected for any instrumental errors, and 

 those of the barometer have been reduced to 32 F. 



Atmosj)lieric Fressure. — The highest reading of the barometer 

 occurred at 7 A.M. Isfc January, and indicated 30.390 inches. 

 The lowest reading was at 6 A.M. on the 4th February, and was 

 28.841 inches, giving an annual range of 1.549 inches. 



The following table shows the highest and lowest reading for 

 each month in inches : — 



Temperature of the Air F° — The highest reading of the ther- 

 mometer during the year was on the 26th July, when it was 84°4. 

 The lowest reading was on the Ist March, and was — 9*^9 (below 

 zero), giving a range or climatic difference of 94°3, which shows 

 a difference minus of 26°8 compared with the observations of 

 1868. 



The mean temperature for the year was 42°93, which is nearly 

 four-tenths of a degree higher than the mean annual temperature 

 for Montreal. 



Below is a table showing the monthly mean, also the highest 

 and lowest temperature for each month, with the amount of rain 

 and snow : — 



Months. 



January . . 

 February. . 



March 



April . 



May 



June , 



July 



August ... 

 September 

 October . . 

 November 

 December 



Mean 



Temper'ture 



inF.° 



20" 1 3 

 19^^44 

 24'^ 06 

 41'= oo 

 52*^96 

 58''84 

 68.51 

 65.66 

 65^55 

 46^13 

 30° 28 



22^^88 



Lowest 

 Temper'ture 



-4°o 



-5=4 

 -9^9 



29-0 

 32-^6 

 45°2 

 52^0 

 5i°o 

 S5°9 

 24°7 

 III 



-2^3 



Rain. 



Depth in 

 Inches. 



0-233 

 None 

 1-118 

 I- 107 



2-855 

 4.000 



4-995 

 8.675 

 4.096 

 6.827 

 0655 

 1.004 



Snow. 



Depth in 



Inches. 



^8.07 

 73-76 

 14.07 



1-93 

 3-14 



Inapp. 



6.49 



13.96 



25-95 



