Physiological Studies ou Schistosteg(\ osmundacea. 7 



Humidity. — At Mt. Komagadake and at Nakabusa, I tested 

 the humidity in the caves where the moss occurs, and found that 

 the mean humidity was 94X and 100\ respectively. At Yutanaka, 

 I obtained the results as given in Table II, the mean humidity in 

 the four caves being 93%. 



Tablpj II. 

 Humidity and Temperature in and out of the Caves at Yutanaka. 



//= Humidity. 



Ï' = Temperature. 



