116 



EXPERIMENT STATTOX EECOKD. 



cyclonic storms is still so pronounced that it is not eliminated in the daily nor- 

 mals for a period of twenty-seven years." The table further shows that " the 

 coldest day of the average year was February 6, with a temperature of 21.6° ; 

 the hottest, July 3, with a temperature of 72.5°." 



Data relating to the mean temperatures of the growing (April to September) 

 and nongrowing (October to Mai'ch) sea.sons lSSO-1912 are summarized in the 

 following table : 



Summary of seasonal mean- temperatures, 18S0-1912. 



«18«. 



* ISSO-Sl. 



"Tlie .«;oquence of exceptionally warm and cold .seasons exhibits no such re- 

 lations as to indicate that any simple meteorological law governs the relative 

 extent of monthly and seasonal departures from their respective normals." 



As regards the succession of .^^eason.s, the data indicate that "one extreme of 

 temperature is rarely followed immediately by the opposite extreme. Of the 

 eight cold winters none was followed by a warm spring, and only one by a warm 

 summer; of the .seven warm winters, more than half were followe<l by warm 

 or average springs and by warm summers." 



Since the comfort of man and the nature and growth of the fauna and flora 

 of a region is more largely affectetl by the extent and frequency of its short- 

 period temperature changes than by averages of longer periods, this pha.se of 

 the .subject is very fully dealt with. 



The extreme daily range of temperature during each month of the period 

 from 1SS6 to 1912 is shown in the following table : 



"Extreme daily range of temperature, 1886-1912. 



During the period 1886-1912, "the maximum temperature of the year occurre<l 

 sixteen times in July, six in June, and five in August. While the maximum 

 never occurred in September or IMay, it happened in six years out of the period 

 that the maximum for one or other of these months was next to the highe'Jt 

 tor the year, and above that for two of the summer months of the respective 



