351 



As the nuts are very small at this time, one larva may attack several 

 of them. The hoUowed-out nuts drop to the ground. The larval 

 stage lasts from 25 to 29 days, after which pupation occurs inside 

 the nut. 



Spraying experiments show that a pressure of at least 2501b. is 

 required to ensure good results, and that one of 350 lb. is still more 

 efficacious. A spray gun is advocated in preference to a nozzle. The 

 first spray, applied on 8th May, consisted of 3 lb. lead arsenate to 50 

 U.S. gals, water, and was followed by a second application on 22nd 

 May. A third spray was applied 26th June, but this is not essential 

 unless the larvae of the second generation are very abundant. In a 

 different locality, spraying with calcium arsenate gave negative 

 results, but the reason for this failure can only be determined by further 

 experiment. 



Herrick (G. W.). The Codling Moth— A Quandary and a Query.— 



//. Econ. Ent., Concord, N.H., xiv, no. 2, April 1921, pp. 156-160. 



The problem of controlling the codling moth [Cydia pomonella] is 

 discussed, and the opinions of various authors with reference to the 

 proportion of entry through the calyx and of side injury are quoted. 

 The necessity for further investigations along these Hues is emphasised. 

 In the discussion following this paper R. W. Brancher pointed out 

 the necessity for varying the spraying campaign to correspond with 

 the life-history of the moth in each individual year. 



Sanders (J. G.). The Trend of Horticultural Inspection.—//. Econ. 

 Ent., Concord, N.H., xiv, no. 2, April 1921, pp. 161-166. 



The advantages and uses of horticultural inspection are discussed, 

 and it is suggested that efforts should be made to secure adequate 

 appropriations to improve the horticultural service. 



Marlatt (C. L.). Recent Work of the Federal Horticultural Board.— 



Jl. Econ. Ent.. Concord, N.H., xiv, no. 2, April 1921, pp. 166-171. 



As a result of the increased appropriation in 1920, several new post 

 inspection offices have been opened and the service of the older offices 

 have been amplified. The general work of the board with regard to 

 the establishment of quarantine during the year is reviewed. 



Headlee (T. J.). The Present Status of the Gipsy Moth in New 



Jersey.—//. Econ. Ent., Concord, N.H., xiv, no. 2, April 1921, 

 pp. 172-178. 



In July 1920 an outbreak of the gipsy moth [Porthetria dispar] was 

 found in New Jersey. The predaceous Carabid, Calosoma sycophant a, 

 was also found to be present. Immediate action was taken to ascertain 

 the extent of the infestation. It proved to be scattered over about 

 90 sq. miles, and the centre lav in a 30-acre block of blue spruce. 

 The pest had been probably imported with the stock of this tree about 

 12 years previously from Belgium and HoUand. Its extermination in 

 New Jersey is thought possible, and it has been decided to ask for 

 an appropriation of about /60,000 for the year ending 30th June 1921, 

 and /120,000 for the following year. As a protection for other districts 

 the entire area of about 200 sq. miles has been included in a quarantine. 



