ON THE ANNUAL DISTRIBUTION OF TEMPERATURE AT TORONTO. 47 T 



The clcays when the temperature attains its extreme and mean values 

 for each hour, and the values of the maxima and minima are shown in 

 the followina: table : 



In order to show better the position of the principal epochs in the 

 annual period in former and in later years, [ have drawn up in tabular 

 form a comparative view of the times of occurrence of the extreme and 

 mean values of the normal daily means, and of the maximum and 

 minimum values of the normal daily means at Toronto in the years 

 184l-'5'i, and in 1859-68, and at Stratford in the years 1861-69.* 



MiKiMA. Spring Mean. Maxima. Autumn Mean. 



Day. Temp. Day. Day. Temji. Day. 



Toronto, lS41-'52.... Fob. 14. 23-4 April 19. July 28. 66-9 Oct. 15. 



Toronto, i859-'68.... Jan. 6. 21-2 24. 22. 68-5 23. 



Stratford, 1801-69 . . 15. 19-9 19. 15. 67-1 20. 



I propose next to enquire as to the extent to which any modification 

 has occurred in the probable varicihililij of the daily and monthly means 

 of temperature, and also in the times when a departure of the actual 

 from the normal daily means is found system;itical]y to prevail. 



These points will be considered in another paper. 



* Note. — I am indebteel to Mr. G. J. Macgregor for the particulars relating to 

 Stratford. 



