xlviii THE BEGINNINGS OF LIFE. 



No. LII. Amnionic Tartrate and Sodie Phosphate 

 Solution, after twenty-four hours showed the faintest opales- 

 cence ; in forty-eight hours there was a bluish-white turbidity, 

 which, in seventy-two hours, had become more marked. 

 When examined microscopically multitudes of Bacteria 

 were found whose movements were very sluggish. On the 

 thirteenth day there was a well-marked whitish turbidity, due 

 to Bacteria and Vib7'iones, a slight amount of deposit, and a 

 firm pellicle which was found to be composed, almost wholly, 

 of long unjointed Vibriones and unsegmented Leptothrix fila- 

 ments, all of which, when separate, exhibited the most 

 disUnct eel-Hke movements, accompanied by an actual pro- 

 gression from place to place. 



A?fi??iom'acal Solutions, unboiled, and exposed to Air in a 

 Corked Bottle, after Inoculatioji with a Drop of Fluid con- 

 taining living Bacteria a7id Torul.e. (Temp. 60''- 65° F.) 



No. LIIL Amnionic Acetate Solution, after twenty- 

 four hours was faintly opalescent, and in forty-eight hours 

 showed a very slight bluish tint. In seventy-two hours it 

 was in the same state, and, on microscopical examination, 

 the fluid showed no distinct Bacteria or other living things, 

 though there were a number of very minute particles dis- 

 tributed, singly or in small groups, throughout the fluid. 

 On the thirteenth day there was no change in appearance, 

 except that the sediment had somewhat increased in amount. 

 Still, no Bacteria could be found in the fluid or the sedi- 

 ment, — only the above-mentioned particles, and a few some- 

 what larger, which resembled very minute TorulcB. Amongst 

 the sediment, however, there were two or three very small 

 mycelial tufts of a developing fungus. 



No. LIV. Ammonic Oxalate Solution. — On the eighth 

 day the fluid showed a very faint opalescence, though there 

 wai a well-marked, grevish, flocculent deposit, which was 



