88 ORIGIN OF LOWEST ORGANISMS. 



hours it was in the same state, and, on microscopical 

 examination, the fluid showed no distinct Bacteria or 

 other living things, though there were a number of 

 very minute particles distributed, singly or in small 

 groups, throughout the fluid. On the thirteenth day 

 there was no change in appearance, except that the 

 sediment had somewhat increased in amount. Still, no 

 Bacteria could be found in the fluid or the sediment,- 

 only the above-mentioned particles, and a few somewhat 

 larger, which resembled very minute Tornlcz. Amongst 

 the sediment, however, there were two or three very 

 small mycelial tufts of a developing fungus. 



No. LIV. Ammonic Oxalate Solution. On the eighth 

 day the fluid showed a very faint opalescence, though 

 there was a well-marked, greyish, flocculent deposit, 

 which was found to be composed of an aggregation 

 of colourless and blackish granules, of a multitude of 

 minute crystalline particles (mostly diamond-shaped), 

 and some rounded or ovoidal, thick-walled, spore-like 

 bodies ; amongst which, and enveloped in part by them, 

 were several mycelial tufts of a fungus. A number of 

 minute Bacteria were found distributed throughout the 

 fluid, and also a quantity of minute star-like bodies 

 (crystalline), about Tslhnr m diameter. 



No. LV. Ammonic Carbonate Solution. On the 



eighth day the fluid showed a very faint opalescence, 

 and a slight deposit, which was found to be composed 

 principally of amorphous granules. Distributed through 

 the fluid were some small and sluggish Bacteria, though 

 no other organisms were seen. 



No. LVL Ammonic Tartrate Solution. After twenty- 

 four hours the fluid showed the faintest opalescence. 



