779 
No more is Indo l. 
Nitrates are not reduced to Nitrites. 
Diastatie fermentation is absent. 
Chromogenesis: 
Canary-yellow mainly on LOrFFLER’s serum; less intense 
on the other solid media (except Bordet-medium); also in the 
fluid media. 
Muddy green: the first cultures on Bordet-medium. 
Chocolate colour on Bordet-medium. 
Faint fluorescence on ascites-agar. 
Brownish-red in all older cultures except ascites-agar. 
Poisonous products could not be demonstrated. 
Thus far the microbe did not prove to be pathogenic for animals, 
but even now we wish to lay stress on the fact that all our labora- 
tory-animals, among which a large number of caviae, some injected 
with organic emulsion, others with cultures, remained free from 
tuberculosis. 
Summary. 
The bacterium we have been describing, is to be classed as a 
corynebacterium on account of: 
its septed structure, 
its sometimes peculiar shape with pointed or clublike extrem- 
ities, 
its tendency to branching, 
its lack of acid-resistance (after ZH.) but great affinity for other 
bacterium stains. 
We feel assured that this corynebacterium is identie with FRAENKEL 
and Mucn’s rods, observed by them and others in the tissue of 
malignant granuloma in a large number of cases. 
In describing them FRAENKEL and Mucu mention their peculiar 
morphology, their affinity for stains, and the antiformin-resistance. 
The morphological description of their rods agrees entirely with 
the morphology of our bacterium, as regards both the smears 
from the spleen and those from the cultures. 
The Zieur- and the Gram-stain are the same for either bacterium. 
As to antiformin-resistance we discovered that it cannot be considered 
as a quality peculiar to this bacterium, though we too found some 
rods in antiformin-sediments of organic emulsion. 
We do not intend to enter into further details in this short space. 
Further investigation will have to decide whether or not our coryne- 
