FOODS HUMAN NUTEITION, 251 



the larvae of tlie first generation entering the f rnit early in June ; those of tlie 

 second late in July and early in August. 



Details are presented of spraying experiments conducted at Ames. It was 

 found that where the infestation was not severe the larvae were kept well under 

 control by two sprayings ten days apart with lead arsenate after the blossoms 

 fell. Of these two sprays the first alone did almost as well as the two combined 

 where the infestation was not severe, but under badly infested conditions these 

 two sprays did not keep the worms in check, and in Iowa orchards where the in- 

 festation is severe it will be necessary to spray during the summer. " In order 

 to catch the first of the second brood worms spraying must be done in July. 

 In southern Iowa it should be finished by mid July, in central Iowa by July 20, 

 in northern Iowa by July 25. These dates are approximate. 



" To keep down the codling moth, spray thoroughly immediately after the 

 blossoms fall, then if wormy apples are found in July spray again for the sec- 

 ond brood." 



A destructive pine moth introduced from Europe (Evetria buoliana), A. 

 BuscK {Jour. Ecoii. Ent., 7 (1914), No. 4, pp. 3J,0, 341, pi. /).— A lepidopteran 

 that was reported in May, 1914, to be seriously injuring young Scotch pines at 

 Great Neck, L. I., has been reared and identified by the author as E. huoUana, a 

 species recognized by the leading foresters of Europe as one of the most or even 

 the most injurious of the insect enemies of Pinus sylvertris and other pines. 

 The larvje tunnel in the tips of the leading branches and thereby check the early 

 growth and injure the appearance of the trees. A peculiar curved growth, the 

 so-called " Posthorner," or " Baionnette," a familiar sight in European pine 

 forests, which seriously depreciates the value of the trees, is a characteristic 

 result of the injury. 



An investigation made by the author leads him to conclude that the pest is a 

 recent introduction. 



Red spider control, E. A. McGregor (Jow: Econ. Ent., 7 {1914), ^o. 4, pp. 

 324-336). — The data here presented supplement the account previously noted 

 (B. S. R., 29, p. 360). The author states it appears to be established that 

 in South Carolina the great bulk of continuous dispersion of the red spider 

 on cotton is effected by means of travel from plant to plant across interlacing 

 branches. Experiments have shown that nine hours of complete submergence 

 is necessary to insure the death of the red spider by water. 



Tick eradication in Arkansas, R. M. Gow {Arkansas Sta. Bui. 119 {1914), 

 pp. 3-20, figs. 8). — ^This bulletin presents a brief discussion of the importance 

 of eradication of the tick, its life history and habits, and methods of combating 

 it, including specifications and plans for the construction of a concrete dipping 

 vat. 



As a result of the work fifteen counties in the State have been released from 

 federal quarantine and portions of several others. The total area released is 

 12,668 square miles, or nearly one-fourth of the entire State. The estimatal 

 number of cattle in the released area is 217,000. It is stated that a general 

 interest in tick eradication is now being shown all over the State. During 

 the winter months concrete dipping vats have been built in three-fourths of the 

 counties in the State, some by individuals and others by several farmers 

 working together. 



FOODS— HUMAN NTJTRITION. 



[The importance of sea food in the diet], J. C. Linthicum {Cong. Rec, 51 

 {1914), No. 182. pp. 9561-9564). — In emphasizing the need for conservation and 

 development of marine sea-food life, the author considers somewhat at length 

 the importance of fish as food. 



