673 



reflooding have not proved satisfactory in controlling the larvae and 

 pupae. Carbon bisulphide proved ineffective. The addition of an 

 arsenical to the customary Bordeaux and resin-fish-oil soap used 

 against the fungus diseases of the cranberry is of value in killing the 

 beetles which feed on the foliage. Owing to the dangerous nature 

 of arsenite of lime, lead arsenate is recommended for general use ; 

 a suitable formula contains 3 lb. of paste lead arsenate to 50 U.S. 

 gallons of water or Bordeaux mixture. Excellent results are obtained 

 by invigorating the cranberry vines by the application of fertihsers 

 or a one-inch coat of sand. A bibhography of 8 works is appended. 



Levison (J. J.). Ornamental and Shade Trees. — American Forestry, 

 Washington, D.C., xxi, no. 'iGO, August 1915, pp. 861-865, 4 figs. 



The following advice is given for the month of August : — (1) Spraying 

 with whale-oil soap 1 lb. in 5 U.S. gals, water, for Aphids on beech, 

 white pine, fruit trees and elm ; (2) destruction of the pupae of the 

 elm leaf beetle [Galerucella luteola], either with hot water or kerosene 

 emulsion applied at the base of the tree ; (3) the removal of cocoons 

 and egg-masses of the tussock moth [Henierocampa] ; (4) spraying with 

 arsenate of lead, 1 lb. to 10 gals, water, for the destruction of the 

 locust miner [Cyllene robitiiae], on black locust, oak, linden and fruit 

 trees ; (5) removal of branches of white pine infested by Avhite pine 

 weevil [Pissodes strobi] ; (6) the fumigation with carbon bisulphide or 

 mechanical removal of borers in peach, oak or maple, the presence of 

 which is indicated by the exudation of gum. 



The hickory bark borer [Scol/jlxs quadrisjyinos'is] has been very 

 noticeable in 1915 as far west as Buffalo. The forest tent-caterpillar 

 [Malacosoma dissfria] has been very destructive in Long Island, 

 Pennsylvania and New York States. A serious invasion of army- worm 

 [Cirphis imijmncta] was reported from Cecil county. 



Philips (W. J.). Further Studies of the Embryology of Toxo^j^em 

 graminum. — Jl. Agric. Research, Washington, D.C., iv, no. 5, 

 August 1915, pp. 403-404, 2 plates. 



This paper gives a description of the development of the winter 

 egg of Toxoptera graminum, Rond., based on material observed during 

 the winter 1911-12. 



Jones (T. H.). Aphides or Plant-Lice attacking Sugar-cane in Porto- 

 Rico. — Govt, of Porto Rico. Bd. Commissioners Agric, Rio Piedra-s, 

 P.P., Bull no. 11, 15th March 1915, 19 pp., 2 figs. [Received 

 30th August 1915.] 



Two species of Aphids are known to attack sugar-cane in Porto 

 Rico. Of these, Sipha flava, Forbes (yellow sugar-cane aphis) is of 

 chief importance, the other. Aphis setariae, Thos. (brown sugar-cane 

 aphis), being uncommon. S. flava is knowu in the United States as a 



(C215) D 



