Ward . — Thames Bacteria , III. 241 
At 24° rapid spread above and root-hairs along the axis, 
producing a cloudy appearance all the way down the latter. 
In two months the liquefaction has proceeded one-fourth 
down the tube, the viscid liquid being slightly cloudy. All 
else as in the type, except the floating yolk-like scum. 
Streak at 23°. A very slight yellow streak shows in forty- 
eight hours. On the third day it is sending pale-yellow 
clouds into the gelatine, i. e. sinking, but is still only 
a narrow wet streak. In a fortnight nearly all is liquid, 
and evenly turbid. Thin yellow floating veil, and orange 
deposit. In nineteen days all the liquid is nearly clear. 
Deep orange deposit, of quiescent cocci, and floating flecks 
composed of rods up to 6-iOju long. 
Agar. No growth at 34-35° C. But at 22° there slowly 
forms an extremely thin pale-yellow, shining, gum-like film, 
all over the surface in three to five days, with a slight deposit 
in the nearly clear drainage, and with bluish iridescence at 
the margins. The growth stops sharp at the clear drainage. 
In five weeks the ochre layer is little thicker, but the liquid is 
turbid and has a copious deposit. 
At 25° the faint, filmy, nearly white streak formed in twenty- 
four hours, becomes a thin canary-yellow smooth layer, and 
floating flecks and a yellow-white deposit form in the turbid 
liquor in a week. The growth was better from old gelatine 
( Fi g- 53 )- 
At 1 8° C., the agar-cultures were exactly like No. 23, except 
that the amount of deposit in the drainage (in eight days) was 
much smaller. 
Potato at 22°. Extremely slow ; in a fortnight only a small 
ochre patch, duller than No. 18 and far slower. 
Broth at 25°, infected from agar, was shimmering in twenty- 
four hours. And in fourteen days was exactly like No. 18, 
with a yellow deposit at the base of the turbid liquor. No 
growth at 35°, but equally good at 18 0 and 25°- The 
deposit turns more orange-yellow and the liquor is of a clear 
sherry-colour : the orange hue is far less deep than in No. 7, 
however. 
