43 
existed there in former times; for there is no evidence of one 
even in the relics buried in the soil. The red pine, therefore, 
does not seem to be suited to the south side, while the broad 
leaved trees grow better on this side. This fact plainly shows 
us that the southern prairie-side has sufficient temperature and 
humidity to maintain the broad leaved trees in the growing 
season, while the northern prairie-side has not. This is easily 
explainable by the climatic conditions of the different sides 
which we have already alluded to. 
Fig. 14. Cryfilomeria aveuue of the Asama-slinne (Yoshida). 
