10 
tne lice with a dull knife any time of the year, and washing the tree with 
strong soap-suds about the first of June, when the young lice are hatching. 
A large syringe may be used to reach the smaller twigs. 
The Codling Moth and other Insects.—Codling moth larvas reported as 
spinning cocoons in the crotches and under the bark of apple-trees. They 
will come out as moths in a couple of weeks and lay eggs on the apples 
for another brood. This second brood spend the winter in their cocoons. 
Remedies : Put bands of hay or rags around the trees and in the crotches for 
worms to make cocoons in, and destroy cocoons by burning or otherwise, 
examining the bands every ten or twelve days; gather and destroy the 
wormy apples as they fall, or keep the hogs in the orchard and let them 
do it for you. 
Benj. D. Walsh and his Cabinet. (Prairie Farmer, July 30, 1870, v. 41, p. 234.) 
The Walsh collection purchased by the State and deposited for the 
time with the Chicago Academy of Science. The cabinet consists of two 
parts: first, the cabinet proper, in which the insects are scientifically 
arranged and named; second, the supplementary collection. The number 
of species in all is said to be about ten thousand, and the number of 
specimens about thirty thousand. Two thousand five hundred dollars was 
paid for it. All but a few minute species had their legs extended, and 
the wings of all except Coleoptera and Hemiptera were spread. Mr. 
Walsh was so devoted to his work that all society was given up except 
that of his books and correspondents and the few persons who sympa¬ 
thized with him in his pursuits. His application to study was such as to 
affect his health and spirits. He was scrupulously exact in business and 
scientific investigations. A fondness for the study of insects was acquired 
in his youth, and about ten years ago, having acquired a moderate com¬ 
petency, he retired from business, and devoted his whole time to study. 
Answers to Correspondents. (Prairie Farmer, Aug. 13, 1870, v. 41, p. 250.) 
Aphis mali on apple leaves. Syringe the trees with strong soap-suds. 
Countless numbers of black flies reported from Christian Co. Probably of 
the genus Simulium. Smoke will drive them away. 
Katydid's eggs on twigs of cherry. Illustrates remarkable acuteness of 
the senses of this insect. 
Galls of Pemphigus vitifolice on leaves of Clinton grape. Pick off the affected 
leaves and burn them. 
Large, flat, blackish bug found on apple. [Brochymena.] 
Answers to Correspondents. (Prairie Farmer, Aug. 20, 1870, v. 41, p. 258.) 
Squash Bugs.—Habits described. May be destroyed by hot w r ater or by 
burning. 
Turnip lice and other insects .—Aphis brassicce imported from Europe. 
Ko effective remedy for them on field crops. A decoction of tobacco may 
destroy them and other aphids. 
Plum Curculio.—Correspondent confounds Conotrachelus nenuphar and 
Anthonomus prunicida. Both described. The former enters the ground to 
transform; the latter remains in the plum pit. The two species further 
contrasted. 
Black Walnut Caterpillars.—These are Datana ministra. They may be col¬ 
lected on the leaves and burned. 
Potato Bugs and Paris Green. (Prairie Farmer, Sept. 10. 1870, v. 41, p. 
282.) 
A correspondent reports experience in using Paris green. Poison was not 
sufficiently diluted. Season very favorable to the bugs. Their natural 
food consists of species of Solanum, but except the potato and tomato 
these plants are not plentiful enough to amount to much in supporting 
such numerous and voracious insects. 
