522 * 



LiJSTNER (G.). Ueber die bisher in den preussischen Weinbaugebieten 

 angestellten wissenschaftlichen und praktischen Versuche zur 

 Bekampfung des Heu- und Sauerwurms. [The scientific and 

 practical Experiments hitherto made in the Prussian Vine-growing 

 Districts for the Purpose of checking the first and second Genera- 

 tions of the Vine Moths.] — Centralbl. Bakt., Parasit., u. Infek- 

 tionshr., Jena, lite Abt., 1, no. 1-4, 10th February 1920, pp. 88-175. 



This is a comprehensive review of experiments conducted in Prussia 

 since 1898 with a view to checking the first and second generations 

 of the vine-moths [Clysia ambiguella and Polychrosis bofrana]. The 

 measures tested are divided into three groups : — Those that are useless ; 

 those that are effective, but are not available for a number of reasons 

 including — as in the case of arsenicals — legislative restrictions ; and 

 those that are of practical value, even on a large scale.. This last class 

 includes the use of nicotine and soft-soap solutions. The former is 

 used in strengths of 1-1| per cent, and the latter in strengths of J-| 

 per cent. Tobacco dust was less effective than the liquid extract. 

 Nicotine- soap is more effective against the second generation than 

 against the first. Its use does not give any unpleasant taste or 

 smell to the grapes. 



Jegen (G.). Die Blausaure und ihre Bedeutung im Kampfe gegen 

 tierische Schadlinge. [Hydrocyanic Acid and its Importance in 

 Work against Animal Pests.] — Schweiz. Zeitsckr. Obst- u. Weinbau, 

 Frauenfeld, xxix, nos. 18 & 19. 4th & 18th September 1920, pp. 

 289-294, 322-326, 2 figs. 



Very successful ex])eriments in fumigating fruit trees with hydro- 

 cyanic acid gas against Anthonomus pomormn, and in fumigating 

 store-rooms where stocks of dried fruit' were infested by the larvae of 

 Ephestia ehitella, Hb., are described. This method of fumigation is 

 both highly efficacious and cheap. It is also easy to apply, provided 

 that the same operators are employed in a given district. The estab- 

 lishment of an organisation for carrying on this work in Switzerland 

 is therefore suggested. 



Stift (A.). Ueber im Jahre 1918 veroffentlichte bemerkenswerte 

 Arbeiten und Mitteilungen auf dem Gebiete der tierischen und 

 pflanzlichen Feinde der Zuckerrtibe. [Communications of Value 

 published in 1918 concerning the Animal and Vegetable Enemies 

 of the Sugar-beet.] — Centralbl. Bali., Parasit., u. Infeliionskr., 

 Jena, Ilte Abt., lii, no. 1-3, 15th September 1920, pp. 65-78. 

 A full review of the literature on the subject for the year 1918 is. 



given. 



Ultee (A. J. ). Verslag over het Jaar 1919. [Report of the Besoekisch 

 Experiment Station for 1919.] — Meded. Besoekisch Proefst., 

 Djember, no. 29, 1920, 25 pp. 



Amongst the material sent in for inspection were leaves of young 

 coconut attacked by a beetle, Brontispa longissima ; leaves of young 

 Hevea attacked by mites ; and coffee berries infested with Stepliano- 

 deres {Cryphalus) hampei, Ferr. {Xyleborus coffeivorus, Weele). 



