I ¢ : 
88] CURRENT LITERATURE 375 
the first divisi ee . : 
and does a iid a epee ood eae most dicotyledons studied, 
tem Scttive ee eo be quite a constant feature among 
tisa sati i : 
tive forms.—J. M. C. : e so-called “reduced” forms are rather primi- 
BY ISOLAT 
dull Ward® ee from the river Thames, Professor H. Mar- 
the form is somewhat poly a ee ne of violet-pigment bacteria. 
iacterium appear a shige When in favorable culture media, the 
SMG fecitlus. When in of a filament 50-6ou in length, though it 
wleced to. the Bonen of in adverse cultural environment it may be 
ase of the bacilli of ce It is motile; Pee actively so in the 
mierococcus forms be con Me length. No spores are formed, unless the 
tttsof true spores. The ered such, and they do not show the charac- 
ae acterium is not pathogenic for guinea pigs. 
Ongelatin plates — ‘ ure media the bacillus develops abundant grow 
iphosus, but as they ced of the colonies is very similar to that of Bacillus 
a Scone older those near the surface break through as 
At about ten va Mae different from the typhoid colonies. 
. ‘tial colonies be s’ growth liquefaction begins, and at this time the super- 
-latkens slowly te i? show a slight formation of the violet pigment which 
- Solution of Seta e posh days becomes as dark in color “as a strong 
that the Beene Sag ; By means of several culture media it was shown 
bacilli beneath the ay ue tie ad zooglea mass, and not mixed with the active 
| ‘be existence of the pi ak Microscopical examination failed to demonstrate 
tists external to ce ent within the bacterial cells, but indicates that it 
Pigment ig slightly etal which compose the zooglea matrix. 
OPite have been at < anh! and readily so in alcohol. 
a dozen other descriptions of violet- pigment 
‘teria, and 
| ’ the eae ‘ 
life opinion has prevailed among bacteriologists that when the 
all of the forms 
ths. 
historie 
Ss; 
. are carefully worked out, several or perhaps 
The bacillus here described, 
; d ma 
lowever, y be reduced to a single type. 
distinctly different from 
s 
.,... to have characters which make it 
usly described.— OT1s W. CALDWELL. 
5: A. A Rate has described 
and with partial 
. Suksdorf * has 
the former with nine 
lTeMs 
* ew ee. pe interest are as follow 
M, as well ore from Washington, being trilobed 
ie lished a age e smallest American species. 
Annals - e species of Plectritis and Aligera, 
Fem atid 12: 59. 1898. 
Erythea 6 : ae : aoe 
