20 ART. 3. — SEIICHI KAWAMÜRA : 



out into the air. The specimen, which had been in the ether did 

 not recover light at all ; the other, which had been in the chloro- 

 form, did not revive in the least but passed over very slowly into 

 non-lnminons state. For the purpose of control, a similar-sized 

 piece of gill cut from the same fungus was placed in a closed 

 bottle of the same capacity but without any reagent or gas in it, 

 It continued to emit light for at least three days. Similar ex- 

 periments with similar result has already been reported by previ- 

 ous authors. According to Molisch 1;> Bacterium pJiosphoreum placed 

 in ether vapor should lose its luminosity in fifteen minutes. But 

 it should be borne in mind that the length of time necessary for 

 bringing fungus-light into invisibility largely depends upon the 

 quantity of ether and the capacity of the bottle used. Aeoangeli 2) 

 made similar experiments on Pleur otus oleareus D.C., using such 

 gases as carbon- dioxide, carbon monooxide, nitrogen oxide, hydro- 

 gen, nitrogen, etc. In each case, the extinguished light could be 

 brought into revival if the fungus was taken out of the gas not 

 very long after the extinction, but not otherwise. On the whole, 

 his results stand in agreement with my own. 



(f) A piece of old gill with weakened power of luminosity, 

 placed in the vapor of ether under the conditions befere mention- 

 ed, became highly luminous after five or six minutes. Chloroform 

 vapor brightened the fungus-light a little after ten minutes. In 

 either case, when the specimen was promptly taken out at that 

 stage into the air, the light returned to its former weak state in 

 a few minutes. On the other hand, when the specimens were 

 allowed to remain in the gases, the temporarily brightened light 

 began in a few minutes to weaken gradually until it became al- 

 together invisible. 



1) Mblisch, If., Leuchtende Pflanzen, p. 117, 1904.— 2) Arcangeli, G., Kicerche sulla Fos- 

 forescenzri del Pleurotas olearius D.C., 1889. 



