242 Ward . — Thames Bacteria , III. 
Milk at 25°, infected from agar, gave no results in fourteen 
days beyond acid reaction, and a trace of perceptibly yellow 
deposit. 
Glucose at 25 0 , infected from agar, gave doubtful shimmer- 
ing in twenty-four hours. In fourteen days no further results, 
except a very pale ochre deposit as in the type. 
No. 17 was found by Dr. Kanthack to be non-pathogenic 
for guinea-pigs. 
All attempts to revive No. 17, from cultures a year old, 
failed. 
If we compare Zimmermann’s B. ochraceus with No. 17, the 
resemblances come out strongly. In sizes and measurements 
they agree very well, and the capsule-like envelope he found 
might well be due to the zoogloea investment. 
Zimmermann observed movements, c slow and pendulous,’ 
however, but could detect no cilia. His comparison of the 
warted young colonies to Viel-beinigen Gliederthiere when 
the prominences become marked, is very suggestive, and taken 
with the other characters points to strong resemblance, if not 
identity. 
The only essential difference in the stab-cultures is that 
a floating yolk-like mass not mentioned by him is formed 
in my No. 17. 
On agar the general resemblances are obvious, but in my 
cultures the growth was much stronger, while on potato they 
seem alike, and the same may be said of the broth- cultures. 
As regards temperature and air-requirements, the slow growth 
and slow liquefaction, failure to obtain spores, and general 
characters of the yellow pigment, the two descriptions agree. 
I think it extremely likely therefore that my No. 17 is 
identical with Zimmermann’s B. ochraceus. 
If No. 17 is compared with No. 23, the following differences 
are noteworthy. 
The rodlets are much shorter, and even break up to cocci. 
But we must not overlook the fact that equally short rodlets 
and cocci occur in No. 7. On crowded plates liquefaction 
was rapid, and old cultures have a sour smell. On the whole 
