248 
Ward \ — Thames Bacteria , III. 
Plate. Circular, radiated and zoned colonies with a yellow eye : 
arachnoid. Soon fail. 
Streak. Soon sinks and forms yellow-chrome flocks. In a month 
half the gelatine liquefied with an ochre-yellow deposit. 
Stab. Rapid in twenty-four hours, cloudy along the axis. In 
fourteen days no growth visible on the surface, but ‘ root-hairs,’ cloudy 
and mycelium-like processes round the axis. In a month the same, 
but with slender cloudy outshoots into the gelatine. 
Agar. Merest film or nothing appears up to the fifth day, and 
hardly any certain growth in three weeks. In a month a very slight 
buff-whitish deposit forms in the drainage : no streak visible. 
Potato. Nothing visible for certain in three days at 20° : in a week 
a thin, yellowish, filmy streak, nothing further. 
Broth. Faintly turbid on the third day, but others show nothing 
till the seventh day, when a faint turbidity and white deposit are seen. 
In a month slightly turbid, and a brittle slight veil and ring, and faint 
yellowish deposit. Others show a doubtful ring. 
Milk. No change in a month visible, though perhaps slightly acid 
in twenty days. 
Glucose. No results. 
This appears to be an enfeebled form of this type, and it soon failed 
in the cultures. 
EXPLANATION OF FIGURES IN PLATES 
XII, XIII, AND XIV. 
Illustrating Professor Ward’s paper on Thames Bacteria. 
PLATE XII. 
G-roup VI. The Proteus Type. 
Number 103. 
Fig. 1. Plate-colonies twenty four-hours at 20°C. Natural size. 
Fig. 2. A small colony under the showing zoogloeas and floating islands. 
Fig. 3. Young colonies from a plate-culture twenty hours at 20°, showing the 
origin of the coils, tresses, zoogloeas and islands. 
Fig. 4. Cocci from a gelatine- culture three weeks old, imm. 
Fig. 5. Streak-gelatine-culture at 20° : a after two days ; b three weeks. 
Fig. 6. A two-days’ stab-culture at 2o°C„ showing ‘root-hairs,’ and moss-like 
film above. 
Fig. 7. Agar-culture twenty-four hours old at 25°C. 
