APPENDIX C. xxxi 



No. III. Turnip Infusion in twenty-four hours showed 

 a very slight degree of turbidity. A drop, examined micro- 

 scopically, revealed a number of very minute, but very active, 

 Bacteria. In forty-four hours the turbidity had become very 

 well marked. 



b. Fluid in contact with Ordinary Air and its Particles ; 

 Neck of Flask Sealed after the Fluid had become Cold. 



No. IV. Urine remained quite bright and clear during 

 the fifteen days in which it was kept under observation in the 

 water- bath 1 . 



No. V. Hay Infusion after forty-four hours showed a 

 well-marked turbidity. In sixty-eight hours there was an 

 increase in the amount of turbidity, and also some sediment. 

 During the next forty-eight hours turbidity and sediment 

 gradually increased, whilst the colour of the fluid (originally 

 that of port wine) became several shades lighter. Except 

 that it grew still lighter in colour, and that the amount of 

 sediment increased, it underwent no further obvious change 

 during the fifteen days in which it remained in the bath 1 . 



No. VI. Turnip Infusion underwent no change during 

 the fifteen days in which it was kept in the bath under 



observation 1 . 



i 



c. Fluid in a Flask with a Neck two feet long, and having 



Eight acute Flexures. 



No. VII. Urine remained quite bright and clear during 

 the fifteen days in which it was kept under observation in 

 the water-bath *. 



No. VIII. Hay Infusion remained bright and clear for 

 twelve days. On the thirteenth day a very slight (almost 

 inappreciable) sediment was seen, which scarcely underwent 

 any obvious increase during the next eight days, though on 



1 Flask still in my possession, unopened. 



