lii THE BEGINNINGS OF LIFE. 



opacity, and when examined, the fluid was found to be 

 swarming with active Bacteria. 



Solutions of Ammonic Tar tr ate 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^. 



No. LXI. Solution heated to 149 F. 



No. LXII. i58F. 



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 microscopical examination this 

 turbidity was found in each case to be almost wholly due to 

 the presence of multitudes of Bacteria. 



