165 
Gillette, C. P.—[Notes on Insect Disease.] (Insect Life, v. 3, 
No. 6, March, 1891, p. 259.) 
Mentions destruction of several kinds of caterpillars by disease 
at Ames, Iowa. 
Mally, F. W. —The Boll Worm of Cotton. A Report of Progress 
in a Supplementary Investigation of this Insect. (U. S. 
Dept. Agr., Div. Ent., Bull. 24, p. 48 ) 
Short synopsis of work on insect diseases in progress in Louisi¬ 
ana. Experiments indicate the susceptibility of the boll-worm to 
“cabbage-worm disease,” tho ugh they are not positively conclusive. 
Boll-worm found subject to a spontaneous disease, and cultures 
from egg, larva, and pupa made. It is not yet known whether it 
is contagious. Reports the discovery of a disease each for two 
other insect larvse (Prodenia lineatella and an undetermined noc- 
tuid), both prevalent and fatal, and barely mentions diseases of 
Agrotis messoria and Nephelodes minians , of which cultures were 
made. 
Popenoe, E. A.—The Chinch-bug Disease again. (Manhattan 
Nationalist, Feb. 13, 1891.) 
Corrects misapprehension and consequent misrepresentation of a 
reporter of the “Nationalist”; indicates briefly some points in the 
history of investigations with chirch-bug diseases; and, as contrib¬ 
uting to general information on the subject, quotes from Dr. Lug¬ 
ger’s bulletin article on “Fungi which Kill Insects.” As an infer¬ 
ence from his own and others’ observations says that bugs will 
thrive even though the Empusa parasite is present unless weather 
conditions are favorable to its growth, in which latter case an 
-epidemic of the disease is likely to occur whether the germs have 
been artificially introduced or not. 
Riley, C. V.—The Outlook for Applied Entomologv. Annual Ad¬ 
dress as President of the Association of Economic Ento¬ 
mologists. (Insect Life, v. 3, No. 5, Jan., 1891, p. 181.) 
Under the heading, “Contagious Germs in the Field,” (p. 197) 
speaks doub tfully of the practicability of utilizing them for the 
rapid dissemin ation of disease in view of the delicate questions 
involved. C msiders the difficulties greater with diseases of ciypto- 
gamic nature than with those of bacterial origin. Says, however, that 
“if the work of Snow and Lugger should be fully substantiated, 
the best results have so far been obtained with the Entomoph- 
thora of the chinch-bug. Success, if possible, will come only by 
investigation upon thoroughly careful and scientific lines, such as 
those begun and still pursued by Prof. Forbes.” Mentions pros¬ 
pective investigations with disease germs for the boll-worm ( Helio - 
this armigera ), which has already been found susceptible to the 
-cabbage-worm Micrococcus ( M . pieridis ), although he considers 
another and quite distinct Micrococcus—that which affects Nephe¬ 
lodes violans —as the most promising germ. 
