470 



ON THE CLIMATOLOGY OF STRATFORD, ONTARIO. 



BY C. J. .JIACGREGOR, M.A.,, 



HEAD MASTER OF THE GRAMMAR SCHOOL. 



Stratford, whore the observations which form the groundwork of the 

 following papers were made, is situated in 43° 25' N. lat., and long. 

 80° 58' W., at an (approximate) elevation of 1182 feet above the sea 

 level. The surface of the adjacent country is generally level or slightly 

 undulating; and as the water-shed of the western section of the Province 

 of Ontario passes within a few miles of the town, its position gives a 

 more than ordinary interest to the meteorological observations taken 

 there. The instruments (supplied by the Chief Superintendent of 

 Education) are fixed in position in a shed attached to the north side of 

 the Grammar School building, and are properly protected from being 

 unduly influenced by radiation. The hours of observation are 7 a.m- 

 and 1 and 9 P.M., which are probably not the best (meteorologically) 

 that might have been chosen, but which were, I believe, selected to suit 

 the convenience of the Gratnmar Schools, in connection with which 

 a system of meteorological observations has for some years been in 

 operation. 



In this paper I propose to show the principal steps employed in 

 computing the normal temperatures, together with some of the more 

 important results. The materials employed in the construction of the 

 formulae for computing the normal temperatures, are derived from 

 observations made by me during the years 1861-69, inclusive, and are 

 given in the following tables : 



MONTHLY MEANS OP TEMPER±VTDRB AT STRATFORD. 

 7 A. M. 



