Ward . — Thames Bacteria, III. 
22 i 
Variety </>, Figs. 29, 30. 
Habitat. The Thames. 
Morph. Short swinging paired rodlets 2 x 0-5 g. 
Plates. Trembling liquefying area with grey-white centre and dots 
around, but in further cultures the one or two colonies visible under ^ 
in 1 15 hours are still invisible in six days. In ten days the gelatine 
is liquefying and the feeble colonies running together and white. 
Streak. Slow white colonies sinking and scooping the gelatine. 
White flecks. 
Stab. 1 5-1 8° C. It begins by forming a faint film on the surface 
and faint clouds in the tunnel. In fourteen days an eighth of the 
gelatine is slowly liquefied and a dense white-yellow deposit forms : 
liquid turbid. Tiny dots in tunnel. In a month three-fourths of the 
gelatine is liquefied and clear, white deposit resting on the solid base. 
In a year a very slight deposit, brownish liquid. 
Agar. Thin white film. Hardly visible in fifteen hours. White 
wet patches in two days. Shining milk-white layer in five. On the 
second day a yellow- white streak ; spreading on the fourth, as a thin 
white layer. On the fourteenth day still extremely thin and slight : little 
growth in a month — white flecks in drainage. 
Potato. Nothing in three weeks. Other cultures have a thin white 
streak first seen on the seventh day. 
Broth. Failed in all cases. 
Milk. Precipitate in twenty days, alkaline. In three weeks it shows 
peptonization, but slow. Yellow liquor. Liquor nearly clear in a 
month. Nearly clear yellowish-brown liquor and clots. 
Glucose. Nothing. 
I cannot understand the negative results in broth. The whole 
behaviour suggests a very weak form. 
The behaviour on agar joins (p , £, and 1 perhaps. It seems more 
like C in some respects, but the milk- and broth-cultures are sharply 
different. 
On the whole I think it is an extremely feeble form of Proteus. 
Variety (, Figs. 31-33. 
Habitat. The Thames. 
Morph. Non-motile rods to nearly cocci. Rodlets often paired. 
Fairly large, 1 x 0-5 fx. 
Q 
