200 



The Plant World. 



OLD ORCHARD. 



♦No fruits were formed. 



INFLUENCE OF CLIMATIC FACTORS. 



The effect of the factors, rain, wind, and temperature, upon 

 the presence of spores in the orchard, agrees with the experi- 

 ments of Saito in his work upon the atmospheric spores of the 

 garden. The effect of these factors is only secondary to the main 

 purpose of this investigation because of their influence in deter- 



