STUDIES ON THE LUMINOUS FUNGUS. 11 



it again showed a feeble light, and after half an hour, the original 

 strength of luminosity was fully recovered. 



(b) -7°C. At this temperature the light of the gill began to 

 fade after fifteen seconds, and became invisible after twenty-five 

 minutes. The gill was kept for an hour longer in the refrigerated 

 air, and then taken out and placed in a temperature of 13°C. It 

 began to emit a feeble light after twenty-five minutes, and re- 

 covered the original intensity after an hour. Another specimen 

 which has been kept for seven hours in the refrigerated air never 

 recovered the power of emitting light. 



(c) -10°C. At -10 C C. the light of the gill began to fade after 

 ten second and became invisible twenty minutes after. An hour 

 later the gill was removed into the air of 13°C. temperature. In 

 half an hour it began to emit a feeble light, and after an hour 

 the light recovered its original strength. Another piece of gill 

 which has been kept for five hours in the refrigerated air, did not 

 emit light again after removal from the refrigerator. 



(d) 3-5°C. The gill placed in the air of 3-5°C. temperature 

 began to show light of diminished intensity after two minutes, but 

 that was long before the light became finally invisible. 



(e) 10-15°C. The gill kept in a temperature of 10-15°C. for 

 twenty-four hours, exhibited all the while no change in light in- 

 tensity. 



(f) 30-39°C. At this temperature the light of the gill began 

 to diminish intensity after one and a half minutes, but did not 

 totally disappear even after four hours, Then the test-tube was 

 taken out of the hot water ; and two or three seconds after when 

 the internal temperature became equal to the external, the fungus 

 light has recovered its original intensity. 



(g) 50°C. The gill in the air of 50°C. temperature began to 

 show diminished light after one minute. A feeble light fingered 



