E0O1WMK2 ZOOLOGY — EW TOM ©LOGY. 161 



the bollworm, including an account of it- systematic position, distribution, economic 

 rtatus, appearance in different Btages, lift- history, natural enemies, and methods of 

 control. The literature relating t«. the pest is reviewed in connection with an exten- 

 sive bibliography. 



The injury of tin- insect to corn, cotton, ami tomatoes is described. Tin- pre- 

 daceous ami parasitic enemies of the pesl are discussed, together with a bacterial 

 disease which seems to be contagious bul not adapted to practical use in destroying 

 bollworms. The cultural methods of controlling the insect consist in thorough 

 plowing, use of seed of early varieties, use of fertilizers, early planting, thorough 

 cultivation. 



Corn may be used as a trap crop. The young larvae may he killed by application 

 of arsenicals during the last week in .Inly and the first two weeks of August. 

 Dusting seems better than spraying. In dusting, Paris green may be used at the 

 rate of 2 or 3 lbs. per acre for each application. The work should be done at night 

 or when the leaves are moistened with dew. Paris green may he applied in cheap 

 Hour or dry slaked lime at intervals of 7 to p) days as long as the larva- are found 

 in exposed positions. 



The Mexican cotton boll weevil, W. D. Hunter and W. E. Hinds < I'. \. Dept. 

 Agr., Bur. Ent. Bul. 51, pp. 181, pis. 98, Jigs. 8). — This is essentially a revised and 

 enlarged edition of Bulletin 45 of the Bureau previously noted (E. S. R., 16, pp. 7;;. 

 74). Part of the information contained in the bulletin is also contained in Farmers 1 

 Bulletin 216 I E. S. R., L6, p. 991 I and Bureau of Entomology Circular 56 I E. B. P.. 

 P>, p. 576). 



The present account is a monograph of the boll weevil and contains a discussion of 

 the insect from every standpoint. The investigations of L904 served to confirm pre- 

 vious studies. The recommendations regarding cultural methods are repeated. A 

 bibliography of the subject is appended to the bulletin. 



Present status of the cotton boll weevil in the United States, YV. I). Hun- 

 RR {U. S. Dept. Agr. Yearbook 1904, }>p- 191-204, pis. 2, fig. 1). — An account is given 

 <>i the territory affected by this pest, the amount of damage done, and the investiga- 

 tions of this Department concerning the boll weevil, together with notes on problems 

 still to hi' solved. 



Work of the Bureau of Plant Industry in meeting the ravages of the boll 

 weevil and some diseases of cotton, B. T. Galloway | U. S. Dept. Agr. Yearbook 

 9904, }>}>■ 497-508). — The work of the Bureau in this field is briefly outlined under 

 the heads of plant breeding, tropical cottons, diseases of cotton, diversification farms, 

 cooperative demonstration farms, early maturing varieties of cotton, and farmers' 

 institute work. Considerable improvement in farm economy has been noted as a 

 result of these investigations. 



Effect of certain arsenites on potato foliage, YV. IP Jordan, F. ('. Stewart, 

 and IP .1. Eustace (New York State Sta. Bul. 967, pp. 968-984, pis. 2, fig. J). — Paris 

 green and arseniteof lime were tested to determine to what extent they are injurious 

 to potato leaves. 



Paris green was applied 4 times either with water, lime water, or Bordeaux mix- 

 tmv. Arsenite of lime was prepared by the Kedzie formula, with lime water and 

 with Bordeaux mixture. In testing Paris green potatoes were sprayed July 7. 22, 

 09, August 12 and 25. No evidence of injury to the leaves from Paris green was 

 noted, even when used at the rate ot 4A lhs. per acre. Paris green proved to have 

 considerahle fungicidal power (one-third as much as Bordeaux mixture) in previ nt- 

 iii'_ r late blight. The yield in treated rows was much greater than in check rows. 



Potatoes were -prayed 4 or 5 t i mes with arsenite of lime. The results obtained 

 indicate that this remedy can not safely be used except with Bordeaux mixture. 

 When applied otherwise, the foliage was badly burned and the yield of potatoes 

 reduced. 



