Dr Hall on the Mean Temperature of Mmitreal. S37 



quarterly duration was to facilitate a comparative examination 

 of the same periods of the year in other climates. 



MEAN TEBfPERATURE OP THE SEASONS. 



3f Spring, be-"\ 

 jinning Mar. 20, ( 

 ending June 20, f 

 nclusive, j 



Of Summer, be- 

 ginning June 2 

 ending Sept. 21 

 inclusive. 



TER, be- \ 

 Dec. 21, f 



Mar. 19, j" 



Of Winter, be- 

 ginning Dec. 

 ending Mar. 

 inclusive. 



Years. 



1826'. 1827. 1828. 1829. 1830. 1831. 1832. 1833. 1834. 1835. 



55.2 



78.5 



40.1 



1826-7 

 17.3 



54.1 



68.6 



36. 



1827-8 



23.0 



55.8 



73.4 



37.8 



1828-9 



15.7 



56.3 



67.9 



40.3 



1829 30 

 22.1 



56.2 



70.8 



44.3 



1830-1 

 21.9 



58.3 



70.7 



37.7 



1831-2 

 17.6 



51.5 



J.9.6 



38.8 



1832-3 

 17.0 



54.0 



68.0 



38.3 



1833-4 

 22.2 



52.2 



77.4 



36.4 



1834-5 

 17.1 



49.8 



83.3 



MEAN TEMPERATURE OP THE YEARS 



1826, 

 1827, 

 1828, 

 1829, 

 18.30, 



47.1 

 44.7 

 47.3 

 46.0 

 47.8 



1831, 

 1832, 

 1833, 

 1834, 

 1835, 



Mean Temperature of the City of Montreal) in' 

 Lat. 45° 31' N., Long. 73" 35' W., . . 

 VOL. XXI. XO. XLll. — OCTOBER 1836. 



46.8 

 44.7 

 44.8 

 4S.0 

 42.0 



45^7 



