298 Ward. — Some Thames Bacteria . 
attempt to bring out the capsule had been made (Figs. 4 
and 5). 
Professor Kanthack also found that this form is patho- 
genic to guinea-pigs, though as he was working with smaller 
doses, the results were not so fatal. Inoculation into the 
thigh produced a large swelling, intra-peritoneal injection 
made the animal very ill for a day. In both cases, however, 
the guinea-pigs recovered. The experiments gave the same 
results on repetition. It is worthy of note that the form 
sent to Professor Kanthack had been much longer in culture 
than that sent to Dr. Lazarus Barlow. 
On being revived on July 13 from an Agar-culture which 
had stood since May 13 of the previous year, i. e. fourteen 
months, the plate-cultures gave normal colonies, showing the 
characteristic zoogloeas embedded in the mass. On potato 
also the cultures showed the characteristic yellowish pasty 
growth with a broad white marginal area on the brownish- 
grey potato, and the other cultures were normal, and no 
question could arise as to identity. Even the custard in milk 
was developed in fourteen days at 30° to 35 0 C. 
All attempts to revive another culture failed. 
De Toni and Trevisan 1 have attempted a classification 
of capsuled micrococci along the following lines : — 
They group all the forms under the head of Ascococceae. 
Then they cut out Winogradsky’s Amoebobacter , chiefly on 
account of the amoeboid movements and arrangement in 
series. The remainder are divided up, first according as the 
‘ capsule 5 is general and around whole colonies, or special , 
i. e. around each individual coccus. Further subdivisions 
depend on whether the c cysts ’ or ‘ capsules ’ are lamellated 
or not, whether the colonies or families consist of few or 
many individuals, whether the divisions are in one or more 
planes, and so on. 
It seems difficult to accept the details, but no more con- 
sistent attempt is to hand, so far as I am aware. 
Sylloge Schizomycetum, p. 1035. 
