20 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 7 



Control of insects affecting live stock. D. C. Mote (Dept. Animal Husbandry in 



cooperation with Dept. Entomology). 

 Moisture as a factor in treatment of insects by the heat method. W. H. Goodwin. 

 The time factor in treatment of summer insects. In connection with preparation 



of Summer Manual of Practice in Economic Zoology. H. A. Gossard. 

 Spraying machinery and accessories. W. H. Goodwin. 



Oregon, Corvallis, — ^H. F. Wilson. 

 Investigations of insecticides and combination sprays. 



This includes lime-sulphur, arsenate of lead, arsenite of zinc, soluble sulphur, 

 atomic sulphur, etc., and a few miscellaneous investigations of minor importance. 



Pennsylvania, Harrisburg, — H. A. Surface. 



Susceptibility of varieties of cultivated plants, especially fruits, to insect and plant- 

 disease injury. 



Improvement of the lime-sulphur solution. 



Prevention of peach tree borer and certain other orchard pests. 



Peru, S. A., Lima, — Charles H. T. Townsend. 

 Transmission of verruga by bloodsuckers. 



These investigations have been carried on by the entomologist personally, assisted 

 by Mr. E. W. Rust, from May to July and by Mr. G. E. Nicholson since July. 

 The result is the complete demonstration, through transmission experiments, of 

 Phlebotomus verrucarum Towns, as the vector of verruga. About 50 species of blood- 

 suckers have been found to exist in the verruga zones so far, of which the Phlebotomus 

 proves to be the only strictly nocturnal and crepuscular species confined to these 

 zones. The other species are being worked up by specialists. The early stages of the 

 Phlebotomus have not yet been found, despite repeated search. 



Porto Rico, Rio Piedras, — 

 General entomological survey of the sugar cane areas of Porto Rico. 



Outlined in last year's report. 

 General breeding work. 

 Laboratory and office work. 

 Field work. 

 Experimental work. Outhned in last year's report. 



Utah, Logan, — E. G. Titus. 

 Arsenical poisoning of fruit trees. 



West Virginia, Morgantown, — W. E. Rumsey. 

 The control of the apple and peach tree borers. 

 Progress satisfactory. 



Washington, Pullman, — -A. L. Melander. 

 EfTect of oil sprays on fruit trees. 



Taxonomic Directory 

 Thysanoptera. 



W. E. Hinds, Auburn, Ala., will classify for privilege of retaining duphcates and of 

 naming and describing the new species. 

 Mallophaga and Anoplura. 

 V. L. Kellogg, Stanford University, Cal., will classify collections (under reservation 



