685 



fruit may be kept clean by storing in an insect-proof room immediately 

 after removal from the drying house. In such cases, the fruit must 

 be dried by artificial heat and not in the open, where infestation may 

 readily occur. Infested storehouses, etc., should be fumigated with 

 hydrocyanic acid, allowing 3 oz. sodium cyanide to every 100 cubic 

 feet, or, if fitted with steam-heating apparatus, the insects may be 

 destroyed by maintaining a temperature of 125° F. for several hours. 



Hinds (W. E.). Fumigation Method for sacked Cotton Seed.—./?. Econ. 

 Entom., Concord, viii, no. i, August 1915, pp. 400-402, 1 plate. 



The methods of fumigation with carbon bisulphide against the 

 cotton-boll weevil [Anthonomis grand is] described in this paper were 

 worked out in Alabama and are extensively used in the treatment of 

 cotton seed grown for planting purposes. With this method it has 

 been found possible to treat 600 or more sacks per day with 4 men 

 at work. The apparatus consists of a 3" air pump with which the 

 liquid and vapour can be forced through the seed. This is connected 

 by pressure tubing with one branch of an ordinary ^" Y such as is 

 used in spraying work. On this branch is a cut-off and a regular 

 spraying accessory. On the other, is a cut-off and an indicator to 

 measure the amount required for each sack. The Y is connected with 

 tubing to penetrate the seed. The tubing is perforated for the last 

 18 inches to form a spray. About one ounce of carbon bisulphide 

 is needed for a 3-bushel sack. 



Merrill (J. H.). Notes on an apparent Relation between Aphids and 

 Fire Blight {Bacillus anu/lovoriis). — Jl. Econ. Entom., Concord, viii. 

 no. 4. August 1915, pp.' 402-403. 



During the spring of 1913, Aphids were found to be especially 

 abundant in nearly every orchard in Doniphan county, Kansas, the 

 incompletely open buds of Jonathan trees being severely attacked. 

 Very few Aphids were found in orchards which had received a thorough 

 dormant spraying with lime-sulphur. Fire blight appeared later in 

 the season in all orchards where the Aphids had not been controlled, 

 and was heaviest on Jonathan trees. In 1914 there was but a slight 

 infestation of Aphids and very little blight appeared. In 1915 the 

 infestation of Aphids was as severe as in 1913, and although fire blight 

 was exceptionally abundant, only those orchards suffered in which 

 the Aphids had not been controlled. Jonathan trees which had been 

 treated with a contact insecticide showed little blight injury. The 

 facts above recorded seem to show that there is a direct relation between 

 the severity of the infestation of Aphids and blight infection. 

 Experiments in this connection are in progress. 



Crosby (C. R.) & Hadley (C. IL). The Rhododendron Lace-Bug, 

 Leptobyrsa exjjlanata, Heidemann. — Jl. Econ. Entom., Concord, viii, 

 no. 4, August 1915, 2 plates. 



Leptobyrsa explanata is more or less widely distributed from North 

 Carolina to Massachusetts and as far west as Ohio. It has been 

 recorded as abundant on Kalmia latifolia and RJiododendron maximum. 

 The chief injury is caused by the nymphs and adults feeding on the 



