662 EXPERIMENT STATION RECORD. 



lantern traps for catching the moths. The author recommends also 

 the collection of eg-gs which may be recognized on leaves. Care should 

 be exercised, however, to leave all parasitized eggs so that the para- 

 sites maj" hatch and assist in reducing the numbers of the moth borer. 

 An extensive bibliography of the subject is added to the article. 



A report on methods of combating the grape Cochylis by 

 winter treatment, J. Laborde {Bui. Min. Agr\ [France]., 19 {1900), 

 No. J, 2^^- 373—392). — The author states that the name Cochylis has 

 been applied to two insects, Tinea ambiguelki and Eudemis hotrana. 

 The insects were studied in the laboratory in all of their stages. Sev- 

 eral parasites were reared from each of these insects. Chrysalids 

 maintained for 2-i hours at a temperature of —10 to 12° C. were 

 unharmed by the exposure. Chrysalids of Eudemis plunged for one 

 minute in water at a temperature of lO"^ died to the extent of 20 per 

 cent. A similar exposure in water at 50° C. killed all the chrysalids. 



Among the chief remedies applied by the author mention should be 

 made of scraping the bark, plunging the grape stocks in hot water, 

 and painting with various mixtures. It is stated that painting with 

 a mixture composed of lime, heavy oil, and bisulphid of carbon is very 

 effective in destroying the insects and may be used without causing* 

 injury to the grape vines. 



The grape-cane gall maker and its enemies, F. M. AVebster 

 {Ohio .St((. Bui. 116, pp. 195-198, pi. 1). — The author's observations 

 on this insect are conhned to vineyards near Gypsum, Ohio. The galls 

 produced by the beetle are always provided with an opening which 

 does not heal until after the escape of the adult insects. The author 

 believes that the complete life cycle is passed inside the galls. Fallen 

 leaves collected near a vineyard on Maj^ 0, 1898, were placed in the 

 insectary and adult beetles began to emerge from the mass of leaves 

 on May 23. In the vineyard, near where the leaves were collected, 

 numerous galls containing larvae were found on June 24. All stages 

 of the insect were found in these galls on August 11, and at this time 

 some of the adults were already emerging. The life history of the 

 insect may therefore be described as follows: The eggs, deposited in 

 May or June, hatch into larvae which live in the galls formed on the 

 canes and finally transform into adults which leave the vines and pass 

 the winter under fallen leaves or matted grass. 



Catolaccus tyloderrnce is mentioned as an important parasite of this 

 insect. The beetle seems to prefer the Concord variety, and it is 

 recommended that this variety be planted in the central portion of the 

 vineyard. The author suggests as a preventive measure the collection 

 and destruction of fallen leaves and other ruljbish in the vicinity of 

 vineyards. 



Fumigation with hydrocyanic-acid gas, A. D. Hall {Bd. Agr. 

 [London]. Rpt. Agr. Education and Rc^tarcli, 1899-1900, jyp. 71-73). — 

 Experiments were conducted for the purpose of determining the 



