232 Ward. — Thames Bacteria , III. 
on potato the very deep orange waxy appearance was 
developed forthwith at 25° C. In broth the growth stops 
below 35 0 C. 
In spite of minor variations there could be no doubt of the 
identity, and the characters obtained undoubtedly strengthen 
the resemblances between this form and No. 7. 
If Zimmermann’s B. radiatus 1 is compared with my No. 23, 
it will be found that the coincidences are so numerous that 
they point to identity. He gives the thickness as about 
o -65/01, the rods being slightly motile. He notes the whitish- 
bluish-grey colour, and a ‘ root-like ’ central mass ; the branch- 
ing to finer and finer twigs of this root-like central mass (my 
central zoogloea-tresses) and the general resemblance to 
a mycelium. Most of his details, including liquefaction on 
the fourth day, the yellow colour, and radiate bundles, come 
into accord with my description, the slight discrepancies being 
easily referable to differences in growth. 
The stab-cultures will also bear close comparison, though 
we have each employed different modes of expressing the 
similar events. 
The same is true for the agar-cultures, and we have both 
noticed the greenish hue. On potato also, Zimmermann’s 
* ochre-yellow, often tending to red-brown ’ seems not incon- 
sistent with my ‘ eventually more orange.’ 
Similarly with the broth-cultures, he also notes the falling 
flecks and yellowish-white deposit. The temperature and 
other conditions, and even the failures with Gram’s method, 
agree, and the whole impression I get from Zimmermann’s 
description leads to the conviction that we are both working 
with a Proteus form, either identical or closely allied and 
belonging to the same type. 
No. 7 : B. radiatus (Zimm.). Figs. 43-45. 
A peculiarly indistinct colony frequently made its appear- 
ance on the isolation plates, like a faint mycelium sunk in 
the gelatine. This was found to consist of radiating rows 
1 Zimmermann, 1. c., p. 58. 
