So ORIGIN OF LOWEST ORGANISMS. 



monic Carbonate in forty-eight hours showed a 

 slight turbidity, which slowly increased during the next 

 two days. In two days more the turbidity was very 

 great, and there was also a considerable amount of 

 sediment. The fluid was then examined microsco- 

 pically, and found to contain myriads of large but very 

 languid Bacteria. 



e. Fluid (in vacuo) in a Flask which had been Sealed during 

 Ebullition. 



No- XXXV- Healthy Urine underwent no apparent 

 change for the first twelve days, then (the bulk of the 

 fluid still remaining clear and bright) small greyish white 

 flocculi began to collect at the bottom of the flask, 

 which very slowly increased in quantity during the suc- 

 ceeding twelve days. At the expiration of this time 

 the flocculi were pretty numerous, though the fluid was 

 otherwise bright. The vacuum was ascertained to be 

 still good, and on breaking the flask, the fluid was 

 found to have a slightly acid re-action, though no appre- 

 ciable odour. When examined microscopically, the 

 flocculi were seen to be made up for the most part of 

 mere granular aggregations (simple, and not in the form 

 of Bacteria). Small Torula cells, however, existed in 

 some quantity ; also a few necklace-like chains, and a 

 comparatively small number of Bacteria, some of which 

 were tolerably active. 



No. XXXVI. Simple Turnip Infusion after twenty 

 four hours showed no sign of change, though in thirty- 

 six hours it was slightly turbid. On the fourth day the 

 turbidity was well-marked and general, though there 

 were no flake-like aggregations. When examined mi- 

 croscopically, the fluid was found to contain multitudes 

 of Bacteria. 



