xxxviii THE BEGINNINGS OF LIFE. 



certain nature. Two days afterwards the flask was broken, 

 when the odour of the fluid was still found to resemble that 

 of fresh urine, and its re-action was acid. The flocculi were 

 made of granular aggregations, in the midst of which were a 

 few bodies closely resembling Torulce, though they were some- 

 what doubtful in nature. Neither Bacteria nor Vibriones 

 could be found. The flask, having a short open neck, was 

 then replaced in the warm-bath. In sixteen hours the whole 

 fluid had become turbid ; it was also slightly foetid ; and, on 

 microscopical examination, it was found to be swarming with 

 Bacteria, Vibriones, and Leptothrix. 



No. XXV. Turnip Infusion + \ gr. of Cheese, in forty- 

 eight hours showed no change, though in seventy-two hours 

 there was a well-marked pellicle, in which some bubbles of 

 gas were engaged. After ninety-six hours the neck of the 

 flask was broken ; the fluid was found to be foetid, and it had 

 an acid re-action. On microscopical examination, a por- 

 tion of the pellicle was seen to consist of multitudes of Bac- 

 teria, Vibriones, and jointed Leptothrix filaments. 



No. XXVI. Simple Turnip Infusion remained clear, 

 and showed no appreciable change for seven days. On the 

 eighth day a slight general turbidity of the fluid was noticed. 

 On the ninth, the turbidity was rather more marked, though 

 there was no trace of a pellicle; the neck of the flask having 

 been broken, the fluid was found to be odourless and very 

 faintly acid. On microscopical examination, multitudes of 

 languid Bacteria of medium size were found, and also short 

 monilated chains with from two to ten segments. There 

 were no Vibriones, Leptothrix, or Torulce^. 



e. Fluid (in vacuo) in a Flask, Sealed during Ebullition. 

 No. XXVII. Healthy Urine after twenty-four hours 



1 The condition of the fluid, and the nature of its contents, was very 

 similar to that met with in No. XXI. 



