d 
320 General Notes. 
served that these insects sometimes die off in great numbers du- 
- ing apparently favorable weather in summer. Sometimes indeed 
all infesting a given area seem to perish, so that the following st 
son a collector can scarcely find one for his cabinet where there 
have been millions of them to the acre twelve months befor 
There is every appearance of a contagious disease by which they 
are thus swept away, and it is quite probable that the organism 
herein named is the true element of the contagion. It does, how- 
ever, appear to be less virulent in its usual effects. It may be cul . 
tivated in meat broth. p 
M. gallicidus—Cells globular, single or united in pairs; .0000 
to .000029 in. in diameter; movements oscillatory only. : 
In the blood of the domestic fowl suffering with “chicken 
cholera.” : 
gious element consists of minute, globular granules, capable df 
self-multiplication, it appears no one has named the organism nor 
given a description of it as a species. Dr. Salmon (Report US 
mu 
PK 
.000028 to .000032 in. in diameter (Detmers). ge 
In the blood and other fluids of pigs, sick with swine pate 
“hog cholera,” described by Dr. H. J. Detmers (Report Us 
Department of Agriculture, 1878), under the name of Barili 
The author, however soon after, recognizing more cle d 
generic characteristics of these minute crganisms, disclaimed OF 
propriety of the classification first adopted by him. Ba 
have also been made in this country by Drs. Law and » a 
but no name has been heretofore formally proposed ao 
stated. My own studies upon the organism, as such, aco 
the descriptions published by the authois named and WERTET 
of Méguin of France.—T. ¥. Burrill, Champaign, I. cd 
_ ENTOMOLOGY.’ oe 
especially tough wood he cut down this oak tree very 7 
ground in order to get as much of the butt as possible. 
; Ea ; tom 
1 This department is edited by Prog, C. V. RILEY, Washington, DO 
communications, books for notice, etc., may be sent. 
