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of lime, acts as a good repellent. The main crop may be protected 

 by spraying with Bordeaux mixture, 2 lb. copper sulphate, 2 lb. 

 quick lime (or 3 lb. ground hydrated lime) and 50 U.S. gals, of water. 

 To this must be added 6 lb. lead arsenate paste, or 3 lb. of powdered 

 arsenate of lead. 



Heat kills Insects in Stored Provisions. — Mthly. Bull. Ohio Agric. Expt. 



Sta., Wooster, ii, no. 4, April 1917, p. 135. [Received 19th June 



1917.] 

 Beetles, moths, mites and similar insects that live in flour, cereals, 

 dried fruits and other stored provisions may be destroyed by heating 

 the infested foods in an oven at 135° F. for 15 minutes ; this treat- 

 ment does not injure the quality of the food for further use. 



Goodwin (W. H.). The Currant Worm. Arsenicals and Hellebore 

 may save Currants and Gooseberries.— MAi;;/. Bull. Ohio Agric. 

 Expt. Sta., Wooster, ii, no. 6, June 1917, pp. 197-198. 



The larvae of Pteronus ribesii, Scop, (currant and gooseberry sawfly) 

 are best controlled by spraying the under-sides of the leaves with ar- 

 senate of lead, 3 lb. to 50 U.S. gals, of water. Paris green can also 

 be safely used at the rate of | lb. to 50 U.S. gals, if a little lime be 

 added. The plants may also be dusted with dry arsenate of lead, 1 lb. 

 being mixed with 5 or 6 lb. of lime or flour, or, in cases where this 

 would be dangerous owing to the fruit being nearly ripe, they may 

 be dusted with fresh hellebore mixed with 5 parts of dry lime or flour. 

 If a spray is preferred, 1 lb. of fresh hellebore should be mixed in 10 

 to 12 U.S. gals, of water. 



GossARD (H. A.). The Colorado Potato Beetle. Hand Picking and 

 Arsenicals advised for Tuber Crops. — Mthly. Bull. Ohio Agric. 

 Expt. Sta., Wooster, ii, no. 6, June 1917, pp. 199-202, 2 figs. 



Collecting the adults and egg- masses of Lcptinotarsa decemlineata 

 (Colorado potato beetle) by hand has been found by small growers 

 to be efficacious and to reduce the cost of spraying, but on a large 

 scale spraying is cheaper. Experience has shown that a mixture of 

 Paris green and arsenate of lead is better than either alone, the former 

 being much more rapid in its action, but also disappearing more quickly 

 from the plant, no trace of it being found a week after application. 



This beetle is naturally controlled by various species of Coccinellids 

 that feed on the eggs and young larvae, by Lebia grmidis and other 

 ground- beetles, the spined soldier bug [Podisus spinosus], and 

 Perilloides (Perillus) circumcinctus, which destroy the larvae. A 

 Tachinid fly is often a common parasite of the larvae. Among 

 birds, the rose-breasted grosbeak is its greatest enemy, others being 

 robins, thrushes, crows, sparrows and cuckoos. Toads also eat the 

 larvae voraciously. 



King (J, L.). The Lesser Peach Tree Borer {Synanthedon pictipes, G. 



and R.). — Ohio Agric. Expt. Sta., Wooster, Bull. no. 307, January 



1917, 49 pp., 21 figs. [Received 29th June 1917.] 



Aegeria (Synanthedon) pictipes, G. & R. (lesser peach-tree borer) 



attacks plum and cherry trees generally in diseased and wounded 



(C381) o2 



