RoRiG (G.). Schadlinge an Hiilsenfrtichten. [Pests of Leguminous 

 Vecretables.] — Ze?Vsc/^r. /. PflanzenkranWieiten, Stuttgart, xxvii, 

 nor4, 15th August 1917. p. 205. (Abstract from Fhigblatt No. o7 

 der Ksl. Biol. Anstdtf. Land- u. Forsttv., July 1915.) 



Peas and beans mav be freed from Brucliids by heating to 

 139° F , or the beetles mav be sifted out if the seed, which has been 

 stored in the cold, is first kept for a few days at 68°-71° F. in order to 

 make them emerge. Sitones lineatus may be checked by collecting 

 the weevils or bv spraying Anth hellebore-soap ^vith or without tobacco, 

 or Urania green. Preventive measures against the moths, Cydia 

 [GraphoUtha) nehritana and C. {G.) dorsana, include selection of seed, 

 careful preparation of the soil, sowing in drills and the avoidance of 

 fresh stable-manure. 



MuTH (F.). Die Milbensucht der Reben, verursacht durch die Milbe 

 Eriophyes vitis, Nal., eine neue und gefahrliche Krankheit unserer 

 Weinberge, nebst einigen Bemerkungen fiber ahnliche Trieb- 

 verunstaltungen. [The ]\Iite Disease of Vines, a new and dangerous 

 Disease of our Vineyards due to Eriophyes vitis, Nal., and some 

 Notes on similar Shoot-Deformations.] — Zeitschr. f. Pfianzen- 

 Jcrankheite7i, Stuttgart, xxvii, no. 4, 15th August 1917, p. 205. 

 (Abstract from Hess. Landtv. Zeitschr., 1916, pp. 442-443 & 458- 

 459, 5 figs.) 



This disease of Amines, which is caused by Eriophyes [PhyUocoptes) 

 fit is, Nal., was first observed in Hessen. For summer treatment 

 cutting-back or spraying is recommended. Lime-sulphur (1 : 40), or 

 nicotine soft soap (1:1; 100), or Muth's solution (1 : 100) should be 

 used. The stocks must be painted in addition with lime-sulphur 

 (1 : 4) at the end of March after pruning. 



MuTH (F.). Die Johannisbeeren-Knospengallmilbe {Eriophyes ribis, 

 Nalepa) sowie einige andere Johannisbeerschadlinge. [The Currant 

 Bud Gall Mite, E ribis. Nal., and some other Pests of Currants.] 

 — Zeitschr. f. Pflanzenkrankheitm , Stuttgart, xxvii, no. 4, 15th 

 August 1917, p. 206. (Abstract from Hess. Obst- Weiii-, Gemiise- 

 u. Gartenbauzeitung , 1915, pp. 17-23, 9 figs. 



In Hessen Eriophyes ribis, Nal., causes serious injury to red and 

 white currants and also, but to a less extent, to black currants. The 

 injury is less a deformation than an excessive increase of buds. This 

 paper also contains notes on damage to currants by Aegeria {Sesia) 

 tipuliformis. Aphis ribis, and A. grossulariae. 



ZwEiGELT (F.). Beitrage zur Kenntnis des Saugphanomens der 

 Blattlause und der Reaktionen der Pflanzenzellen. [Contributions 

 to the Knowledge of Sucking bv Aphids and of the Reactions of 

 the Plant Ce\h.]~Zeitschr. f. Pflanzeiikronkheiten, Stuttgart, 

 xxvu, no. 4, 15th August 1917, p. 207. (Abstract from Centralbl. 

 f. Bakterwl, II, xlii, 1915, pp. 265-335, 7 figs., 2 plates.) 



^Details of the sucking process bv Aphids are given. As with other 

 Khynchota the salivary secretions of Aphids must be able to convei-t 

 starch mto sugar XAith the help of a ferment resembling diastase. 



