286 



and the maximum daily temperatures for the dates of flowering give 

 the results in the following table : 



Again the accord with the results of previous years is satisfactory, 

 but the individual variations are so large as to show that there is no 

 clear connection between the epochs of flowering and the mean tem- 

 peratures. Next the sums of temperatures received by these plants 

 since the last severe cold is computed, assuming 0° C. as the initial 

 temperature, with the following results : 



These -sums agree well among themselves for the two years, but are 

 notably higher than the sums for the four previous years, the excess 

 being so much larger than the uncertainty, as deduced from the agree- 

 ment of the numbers among themselves, that we can scarcely con- 

 sider that such sums as these represent the true influence of climate 

 on these plants. 



The dates of flowering and harvest of rye and winter wdieat at 700 

 or 800 stations give the following results : 



The mean temperatures at the date of flowering are, for rye, in 1884, 

 14° C, and 1885, 12.2° C; for winter wheat,"in 1884, 15.1° C, in 

 1885, 16.4° C. These figures agree well with the previous four years, 

 but the individual discrepancies show that there is no simple relation 

 between the flowering of these plants and the mean temperature. 



Again, the sums of temperatures are computed from the 1st of 

 December ; 5° C. is subtracted from all the mean daily temperatures 

 and the sums of the positive remainders are given. Since in previous 

 years ()° C. has been adopted, whereas the evidence points toward a 

 lower figure, therefore Angot now gives the results of a recomputa- 



