APPENDIX C. 



No. XLIX. Ammonic Oxalate Solution. On the 



tenth day there was no distinct opalescence of the fluid, but 

 a well-marked whitish flocculent deposit. On microscopical 

 examination no Bacteria were found in the fluid, and the 

 deposit was made up of an aggregation of blackish and 

 colourless granules, mixed with a few crystals and a very few 

 Torulce cells all being held together by a sort of mucoid 

 matrix. In the midst of this matter were found two or three very 

 small, much branched, mycelial tufts of a fungus growth. 



No. L. Ammonic Carbonate Solution. On the tenth 

 day the fluid showed a very faint opalescence, with a small 

 amount of deposit, and a partial non-coherent scum on the 

 surface, which, on microscopical examination, was found to 

 be composed partly of amorphous granules, and partly of 

 minute Bacteria, mixed with small necklace-like aggregations. 

 The fluid itself contained, in suspension, a few small and 

 sluggish Bacteria, with a minute Torula cell here and 

 there. 



No. LI. Ammonic Tartrate Solution after twenty- 

 four hours showed the faintest opalescence of the fluid ; in 

 forty-eight hours there was a bluish-white turbidity, and in 

 seventy-two hours the turbidity was well marked. When 

 examined microscopically, the fluid was found to contain 

 multitudes of very active Bacteria. On the thirteenth day 

 the turbidity was not so well marked, though there was a 

 very thin pellicle on the surface, and also the dirty-looking 

 crumpled remains of another pellicle at the bottom, which, 

 on examination, was found to be composed of an aggregation 

 of Bacteria. The pellicle on the surface was very thin, and 

 composed only of a single layer of Bacteria. In the fluid 

 itself many Bacteria were seen, of medium size, and mostly 

 sluggish in movement, though- a few of them exhibited very 

 active rotatory movements. No Vibriones, Leptothrix, or 

 TorulcB were found. 



