482 



it is pointed out that no mention is made of feeding having occurred 

 on these plants. Little importance attaches to the fact of a plant 

 providing a habitat only, but if it provides food, the matter is more 

 important and deserves further investigation. 



BaltzingePv (Gr.). Recherches sur le traitement de la Cochylis. 



[Investigations on the control of Clysia ambigtiella.] — Rev. 

 Viticulture, Paris, xlv, no. 1159, 14th September 1916, 

 pp. 170-173. 



In experiments made in vineyards near Geneva in June 1916, some 

 of the plots were treated with a 3 per cent, solution of Golazine, others 

 being left as controls. Counts of plots treated on 2nd and 23rd June 

 showed 1 living larva to every 2*42 bunches in one case and to every 

 1*60 bunches in another, as compared with 1*36 bunches on the control 

 plot. In another vineyard a plot treated on the 29th June showed 

 about one larva on two bunches as compared with one on 1*35 bunches 

 on the control. A count was also taken on a plot treated on the 20th 

 May and again on the 31st May with a Bordeaux spray containing 

 0'3 per cent, of sodium arsenate and 0*9 per cent, of lead acetate. 

 In this case one larva was found on two bunches and one on 1'24 

 bunches on the control. The cost of the Golazine treatment, including 

 labour, was about £1 14s. M. per acre. It was not possible to ascertain 

 whether oviposition occurred as frequently on the treated vines as on 

 the untreated ones. 



Die Wespe als Schtttzerin der Weinberge. [The wasp as a protector of 



vineyards.] — Schweiz. Zeitschr. f. Obst- w. Weinbau, Frauenfeld, 

 XXV,' no. 18, 9th September 1916, p. 294. 



A note in the Frankfurter Zeitung points out that wasps are useful 

 in vineyards, as their larvae are fed almost exclusively on insects, 

 hairless grubs being preferred. In one wall- wasp nest no less than 

 25 larvae of the first generation of Clysia ambiguella were found. 

 According to an old proverb, a good wasp year and a good vintage go 

 hand in hand. 



Schneider-Orelli (0.). Ueber die Selbstherstellung des Raupenleims. 

 [The home preparation of banding adhesive.] — Schweiz. Zeitschr. 

 f. Obst- u. Weinbau, Frauenfeld, xxv, no. 20, 22nd September 

 1916, pp. 318-321. 



The unsatisfactory results obtained with two formulae for the home- 

 preparation of an adhesive for banding purposes when subjected to 

 tests [see this Review, Ser. A, iv, p. 79], induced further trials with all 

 such formulae in the available literature on the subject. A given 

 formula was not discarded if unsatisfactory at first, but various modi- 

 fications were tested and in the case of one adhesive containing resin, 

 stearin oil and lard, no less than 36 changes were tried. The quality 

 of the mixtures was tested in the open, as atmospheric conditions play 

 an important role in practice. While inferior samples may be effective 

 against caterpillars, such as those of Lymantria momicha, they are 

 useless in the case of the long-legged females of Cheimatobia brumuta. 



