238 Dr Hall on the Mean Temperature of Montreal. 



MAXIMUM AND MINIMUM TEMPERATURE IN EACH YEAR. 



Max. 

 Min. 



July 12, 

 Feb. 1, 



1826, 



M-•{•'-!^?; 



Min. F^b. 12, 



1827, 



Max. 

 Min. 



June 27, 

 Dec. 20, 



1828, 



Max /J""e 6, 

 ^"'l July 11, 

 Min, Jan. 



1829, 



Max. 



Min. 



Max. 

 Min. 



July 17, 

 Jan. 31, 



1830, 



June 1. 



1831, 



96 + 

 28 — 



86 + 

 86 + 

 20 — 



98 + 

 20 — 



94 + 

 94 + 

 23 — 



93 + 

 20 — 



97 + 

 17- 



Max. 



July 2, 

 ... 5, 

 ... 8, 

 (Aug. 31, 



Min. H^"'f' 

 I Feb. 25, 



1832, 



1833, 



Max. H""^ 23, 

 (Aug. 21, 

 Jan. 19, 



Min. 



Max. 

 Min. 



Max. 

 Min. 



July 25, 

 Jan. 25, 



1834, 



1835, 



Aug. 12, 

 Dec. 17, 



89 + 

 89 + 

 89 + 



89 + 

 17 — 

 17 — 



90 + 

 90 — 

 25 + 



96 + 

 16 — 



98 + 

 25 — 



Dec. 22, . 



A few remarks, and I shall conclude. 



By a reference to the means of the years, the fact will be ap- 

 parent, that a gradual decrease of temperature has marked them, 

 as they have successively passed away, a circumstance not very 

 consonant with the almost universally received opinion, that coun- 

 tries become gradually warmer in the ratio of their cultivation, 

 population, &c. 



The last year (1835) holds a conspicuous place in point of 

 lowness of temperature, its mean being 2°.8 lower than the 

 mean of the means of the ten years. It may also be remarked, 

 that 1830 stands in a diametrically opposite point of view, its 

 raean being 2°.l higher. 



With respect to the relative means of the months, it is not 

 unworthy of notice, that December 1835 was only excelled in 

 point of frigidity by the same month of 1831, the difference 

 between the two being only 1°.2. In like manner do July 1834 

 and August 1828 stand pre-eminent for heat. 



Perhaps few other climates "possess the same range of tem- 

 perature as the one peculiar to this country ; in proof of which 

 it is only necessary to refer to the maximum and minimum tem- 

 peratures in each year. The highest temperature recorded in 

 the journal is 98° -|-, which only occurred twice during the pe- 

 riod of the ten years. The lowest temperature to be met with 

 occurred only once, in Februar}' 1 . 1836, when the thermometer 



