384 ANNUAL RECORD OF SCIENCE AND INDUSTRY. 



as Peruvian guano, and richer in phosphates. 3 (7, November 



1,1875,884. 



POSSIBILITY OP PREDICTING THE COMING HARVEST. 



Marie Davy, having studied the influence of the weather 

 upon the vegetation in 1875 and 1876, concludes that there 

 occur in the life of a plant two well-marked phases: first, the 

 plant assimilates, and, second, it applies the reserved material 

 to the formation of the seeds. In comparing the seasons of 

 1873, 1874, and 1875, he states that the study of the hy- 

 grometer and the evapometer, supplementing as they do 

 the temperature, rain, and light, leads to the conclusion that 

 if we have the meteorological data for the weather succeed- 

 ing the time of blossoming of the plant, we can, according to 

 the locality, estimate the probable value of the harvest that 

 is to follow. 19 C, 1876, 100. 



