92 ORIGIN OF LOWEST ORGANISMS. 



The clear fluid was then inoculated with some living 

 Bacteria, and the bulb of the flask was replaced in the 

 warm bath. After fifty hours the solution showed a 

 bluish turbidity, which, in thirty-six hours more, had 

 increased to a well-marked whitish opacity, and when 

 examined, the fluid was found to be swarming with 

 active Bacteria. 



Solutions of Ammonic Tartrate and Sodic Phosphate were 

 heated, in their respective Flasks, for Fifteen Minutes to 

 the Temperatures mentioned below. The Necks of the 

 Flasks were afterwards loosely covered with Paper 

 Caps, whilst the Bulbs were immersed in a Water-Bath 

 kept at a Temperature of 75-85 F. 



No. LXI. Solution heated to 149 F. 



No. LXII. 158 F. 



No. LXIII. 158 F. 



No. LXIV. 167 F. 



No. LXV. 167 F. 



All these solutions remained quite clear and free from 

 any trace of general turbidity for ten days. Each fluid 

 was then inoculated with some living Bacteria, and in 

 the space of thirty-six to seventy-two hours, all had 

 become more or less obviously turbid, and on micro- 

 scopical examination this turbidity was found in each 

 case to be almost wholly due to the presence of multi- 

 tudes of Bacteria. 



Interpretation of the Experiments : Conclusions as to 

 the Cause of Fermentation, and as to the Occurrence 

 of Archebiosis. 



These experiments seem to show quite conclusively 

 that M. Pasteur's explanations are altogether inade- 



