Physiological Stmlies on Schistostega osmundocea. 9 



lower than — 20-C.'^ Moreover, most of these caves being covered 

 with snow during the whole winter, the temperature of the 

 ground on which tlie moss gi'ows cannot be even so low as 

 — 20^C. In proof of this fact the following observations made 

 at Kashiwabara (Shinano) are given. 



As to the cave (Senjôjiki) at Iwamurada ; on the 3rd April, 

 r.)15, I made the following observations for temperature, humidity, 

 and intensity of light. 



1) The minimum temperatures of some localities, near which the luminous moss is found, 

 are as follows : 



Iwamurada (Shinano), -16A°G Feb. 1914. 



Mt. Asama „ -19.5°C Nov. 1914— Mar. 1915. 



Matsumoto „ -22.9°C Jan. 1913. 



Xagano „ -11.4°C Jan. 1913. 



Karuizawa „ — 215°C 



Jan. ]913. 



