200 
DR. L. WALDSTEIN. 
well as of gloeo-coccus or gloeo-bacteria (Billroth) is represented 
either hy what could only he distinguished as an extremely small 
speck in the field or of spheroidal bodies much resembling small 
fat-globules in appearance, but not in their chemical nature, so 
far as could be determined by means of chemical reagents. In 
one case the smallest speck assumes lively motion, in another it 
remains where first seen, and little by little a conglomeration is 
formed of many like bodies ; I was unable to determine whether 
this was a process of division. In another part of the field a 
spheroidal body is gradually elongated, and finally a bacillus is 
found in its stead, and presently a thin septum is found to part 
it into two individuals, and so on until the chain of bacilli 
extends in some cases from one end of the field to the other. 
When the zooglcea colonies have reached a certain size they sink 
to the bottom of the drop. I have found that in those parts 
nearest the under surface of the cover glass, micrococci and 
zooglcea generally develop most abundantly, whereas bacilli are 
most numerous in those parts of the drop nearer to the atmo- 
sphere of the chamber. Other globular bodies send out pro- 
cesses of comparatively considerable thickness, which are often- 
times drawn in repeatedly or after assuming a knob-like shape, 
at their extremity are gradually separated from the mother cell ; 
this mode of prolification closely resembles that of yeast cells, 
but careful measurements have shown that the organisms in 
question are smaller than Torulee. 
When the rubber tube was compressed during seventeen 
hours, and in this manner ammonia and a fresh supply of atmo- 
spheric air was withheld, no bacilli were to be seen in the fluid, 
only micrococci globules and short rods; but after allowing the 
ammoniated air free access, and gently forcing it through the 
chamber, bacilli appeared after twenty-four hours; the move- 
ments of the micrococci and of the rods wholly ceased, however, 
when the metallic clamp was allowed to compress the afferent 
hose for a longer period of time. The movements of the bacilli 
and of the rods were such that the body proper remains un- 
bent ; it is, therefore, very natural to suppose that they are sup- 
plied with a ciliary appendix; I was, however, less fortunate 
than several other investigators, and could not discover them. 
When a second Woulff^s flask, containing distilled water with 
a small known quantity of carbolic, acetic, hydrochloric acid or 
camphor was connected with the apparatus, so that the current 
of air passed through these liquids before reaching the chamber, 
the development of Bacteria was seen to begin only after at 
least five days, and only a few bacilli appeared within a week. 
During this time the current was made to pass gently through 
the chamber every two hours in the daytime, just as in the 
