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264 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 13 
impregnation of underwear, etc. It was found that the lice and eggs are killed in the 
ordinary processes of laundering khaki and cotton garments at a temperature of 
about 115° F. for a period of 15 minutes. Woolen garments should be washed for 
fifteen minutes at a slightly higher temperature of about 120° F. Fumigation of 
clothing with chlorpicrin, 10 cc. to 2.5 cubic feet of space, for 30 minutes, heated with 
three one-liter flasks of water at 80° C., proved effective in killing the eggs, except in 
certain cases where rolled or folded tightly. Impregnation of the underwear was 
found to be a promising method of control between lousings. For this purpose the 
authors recommend active chemicals of low volatility like the halogenated phenols, 
such as dibrommetacresol, dichlormonobrommetacresol, and their sodium salts, 
dibromcarvacrol, and dibromxylenol. This publication will be especially useful to 
officers in charge of the sanitation of military camps. 
W. E. Britton. 
Destructive Insects Affecting Ohio Shade and Forest Trees, by 
J. S. Houser, Ohio Agr. Expt. Sta. Bui. 332, pages 159-487, 
plates I to LXX, 1918. 
The author has given us in this volume a most excellent comprehensive account, 
based on practical experience, of some of the more important shade and forest tree 
insects of Ohio, rightfully stressing the conditions necessary for a satisfactory growth 
and development of trees as well as methods of controlling the insects which occasion¬ 
ally or frequently injure them. The author emphasizes, first, the selection of suit¬ 
able species, their proper planting and protection from various mechanical injuries, 
electric currents and leaking gas. He holds that insect control, while possible under 
city conditions, is rarely so in the forest or farm lot. The establishment of a munic¬ 
ipal tree-treating department is favored on economic grounds and for the guidance 
of communities the Cleveland ordinance relating to the management, protection and 
control of street trees is reproduced. There is a detailed and excellent discussion of 
spraying machinery and accessories, including spraying and banding materials. 
The main portion of the work is devoted to brief summary accounts of some seventy- 
seven of the more important pests, grouped under leaf or foliage insects, scale and 
other sucking insects and boring insects. The work is illustrated by seventy plates, 
all of the figures being excellent and a considerable number original. 
E. P. Felt. 
Current Notes 
Conducted by the Associate Editor 
Dr. T. J. Headlee addressed the Connecticut Pomological Society at Hartford, 
Conn., February 12. 
Mr. Arthur Gibson has been appointed acting Dominion entomologist vice Dr. C. 
Gordon Hewitt, deceased. 
Mr. Kenyon F. Chamberlain, assistant entomologist, Connecticut Agricultural 
Experiment Station, resigned March 1. 
Dr. C. L. Metcalf has recently been promoted from assistant professor to professor 
of entomology in Ohio State University. 
Prof. George Macloskie, for thirty-one years professor of biology at Princeton 
University, and professor emeritus since 1906, died January 4, 1920. Between 1880 
