Meteorological Observations at Montreal. 



331 



MEAN MONTHLY TEMPERATURE. 



Ycors. 



Id36 

 1837 

 1838 

 1839 

 1840 



Mean. 



Feb 



11.32 



15.78 



9 00 

 20 80 

 2^0 

 16l)8 



Mar 

 20.90 

 25.15 

 31 60 

 29.30 

 30.55 



•27.50 



April. I May. |June. I .July 

 35.24 53^265.25 7^90 

 40.40 52.15 65.55 65.60 

 34.50,52.8069.9068.90 

 45.50 52.9062 20 70.00 

 44.4655.7366.99 71.96 

 40 02'o3T386o:97|6967 



Aug. I Sept 

 63.05 57l6 

 65.15 58.30 

 (>5.50 57.90 

 66.50 o9.60 50.00 

 70.8759.2646 35 

 66 21 58.5ol45.10 



Oct 

 3!r3"7 

 43.20 

 4660 



Nov. 



32 24 



33 70 

 28 80 

 34.4(! 

 34.36 



Dec. 



r8~09 

 20.95 

 1240 

 25.00 

 17 02 



32.70'18.6! 



42.316 



WEATHER. 



PRESSURE. 



Corrected and reduced to 

 32^ F. 



1836 

 1837 

 1838 

 1839 

 1840 



Mean, 



Mean annu- Annual 

 Years, al pressure, range. Inches. 



29.!)20 

 29.823 

 29.884 

 29 909 

 29.895 



29.886 



1.5.50; 

 1.758 

 1.498 

 2.128 

 1.569; 

 1.7001 

 ~0r 



19 20 

 1690 

 1860 

 15.90 

 27..55 



Westerly. 

 N.w. w. s.w 



189.20 

 200.00 

 163 00 

 179.00 



188.50 



Easterly. 



N.E. E. S.E. 



46.25 

 32.00 

 32.25 

 83.00 

 71.50 



001 19.63 183.94 53 00 60.02 44.48 

 ir about 54 per cent. 15 per ct. 18 per ct. 13 per ct. 



North. 



65.85 

 56 50 

 66.75 

 63.50 

 47.50 



South. 



55.66 

 38.50 

 49 25 

 33.50 

 45.50 



No. d;iys 

 observed. 



357.00 

 327.00 

 31 1 .25 

 359.00 

 353.00 



SNOW GAGE. 



These observations are all made with in- 

 struments by first (British) artists, duly com- 

 pared with standards, and every precaution 

 taken in their position to insure the most 

 correct indications. The city of Montreal is 

 about forty six feet above the tide waters of 

 the St. Lawrence ; the barometer about forty 

 five feet above the mean level of the St. Law- 

 rence. Total elevation of barometer above 

 the tide waters of the St. Lawrence, ninety 

 one feet. 



j\Cote. — As the above tables cover the years embraced in the observations of 

 Prof Loomis, and are referred to by him, (p. 313,) they have been inserted in this 

 place for the purpose of more ready comparison. No doubt their comparative and 

 intrinsic value will be thus enhanced. — B. S., Jr. 



