4:16 



AT TORONTO, IN THE TEARS l859-'68. 



means and those given by the fonnulic having an average value of -01, 

 and in no instance exceeding .02, the coeiEcients T, , Tg , &c., v?ere 

 then modified by applying corrections made necessary by the erroneous 

 assumption that the means of each month are the temperatures proper 

 to their middle days. 



The modified coefficients are given below : 



T T 



T. 



The temperatures for every day in the year, computed froui the six 

 aiodified formulse, have been employed as normals or standards, with 

 which to compare the observations at the ordinary hours since January 

 1869 inclusive, the averages of the six normals on each day being taken 

 as the normal daily means referred to in the monthly tables in the 

 Canadian Journal. The normal daily means arc given to tenths in 

 Table II. 



TABLE II. 



Normal Daily Means of Temperature at Toronto, from six daily observations in the ten years 

 1S50 to 1S6S, inclusive. 



