BUREAU OF ENTOMOLOGY. 397 



Insecticide and Fungicide Board. It is natural that this phase of 

 the bureau's work should be specially active during a year when 

 the interest of the fabric industry of the country has been aroused 

 by the possibility of rendering woolen fabrics immune to clothes 

 moth attack. Farmers' Bulletin 1353, Clothes Moths and Their Con- 

 trol, and Farmers' Bulletin 1346, Carpet Beetles and Their Control, 

 are in course of publication, and data on the biology of Tineola 

 hiselliella, Anthrenus fasciatus^ and Attagenus piceus are being 

 prepared. 



Cold storage tor the prevention or loss by insects. — The aim 

 of this investigation is to determine the most practical temperature 

 at which commodities subject to insect destruction in storage can 

 be held to render them free from living pests. Four cold storage 

 units have been secured for laboratory tests. Data are accumulating 

 in the bureau files which will be supplemented by others secured 

 in commercial storage plants. The rapid increase in the use of cold 

 storage for the preservation of commodities has opened a new and 

 most practical field for investigation. At present the demands for 

 information concerning the effect of cold storage temperatures on 

 the insects in stored commodities can not be met for lack of data. 



Experiments with woods of insecticidal value. — ^The com^ 

 pletion of experiments to determine the value of cedar chests made of 

 the red cedar, Juniperus virginiana, reported upon last year, has 

 led manufacturers to inquire concerning the possible value of other 

 woods when made into chests and closets, from the standpoint of 

 moth protection. Woods of the southern or white cedar, the red- 

 wood, and camphor are being tested. Woods of the Spanish cedar, 

 Cedrela odorata, and Port Orf ord cedar will be tested. The possible 

 value of the essential oils of these woods as well as those of the 

 eucalyptus and pine when used to impregnate wardrobe linings in 

 which fabrics are stored is being tested. 



Fumigation. — The investigation of the value of fumigation in 

 the prevention of losses through insect attack in warehouses con- 

 tinues to be an important phase of the work of the bureau. In- 

 dustries throughout the country are calling upon the department 

 continually for information regarding the protection by fumiga- 

 tion of stocks of raw wool, grain, grain products, beans, cowpeas, 

 candies, meats, hides, brushes, fabrics, furniture, and a long array 

 of other susceptible raw and manufactured products. 



Inspection and intelligence service. — Cooperation with the 

 Army and Navy has been continued in the way indicated in last 

 year's report. This service during the past year has been directed 

 more largely toward furnishing the Navy with information regard- 

 ing the protection of large consignments of brushes, flags, sweaters, 

 and other wearing apparel from moth attack. 



TROPICAL AND SUBTROPICAL FRUIT INSECTS. 



Investigations of tropical and subtropical fruit insects have been 

 carried out under the direction of Dr. A. L. Quaintance as formerly. 



Citrus fruit insects. — At the Florida citrus insect laboratory at 

 Orlando special attention has been given to the so-called Bordeaux- 

 oil-emulsion spray for use in preventing damage b}' citrus insects and 



