224 



treated in 2| hours, as against the 7| hours required when using the 

 revolver sprayer. With the spray-nozzle there is also less expenditure 

 of material, which, in the given circumstances, was in the proportion 

 of 60 to 73. 



Zur Wurmbekampfung. [Combating Vine Moths.] — Luxemhurger 

 Weinztg., Greve?imacher, vii, no. 16, 16th August 1919, pp. 227- 

 229. [Received 12th March 1920.] 



In consequence of the appearance of the first generation of the 

 vine moths (Clysia amhiguella and Polychrosisbotrana) in 1919 a strong 

 infestation by the second generation was anticipated. The remedial 

 measures advocated include the addition of one of the following 

 substances to the third application of the usual Hme-copper solution : 

 from 1 to 1| lb. of soft soap to every 20 gals, of solution ; about 3^ oz. 

 of urania green to every 22 gals, of solution or the same quantity 

 of "Zabulon"; or lib. of tobacco extract and |lb. of soft-soap to 

 10 gals, of solution. 



A nicotine soap solution that has proved efficacious, provided it is 

 freshly prepared, consists of 10 lb. copper sulphate to 100 gals, of 

 water to which lime is added until the solution is alkaHne. To every 

 22 gals, of this mixture 5| oz. of 85-95 per cent, crude nicotine or 

 3J lb. of 8-10 per cent, tobacco extract and about 9 oz. of soft-soap 

 should be added. 



The spraying should be begun when the flight period is at its 

 maximum ; this, under normal conditions, would be about the end of 

 May for the first generation and the middle of July for the second. 

 This spray is also of value as a fungicide. 



Zum Reblausgesetz. [The Law against Phylloxera.] — Luxemhurger 

 Weinztg., Grevenmacher , vii, no. 18, 6th September 1919, pp. 

 261-263. [Received 12th March 1920.] 



The advisability of substituting American vines for the native ones 

 with the object of obtaining a stock that is resistant to Phylloxera 

 is discussed. 



FiXMER ( — ). Zur Reblausfrage. [The Phylloxera Question.] — 

 Luxemhurger Weinztg., Grevenmacher. vii, no. 22, 1st November 

 1919, pp. 315-317. [Received 12th March 1920.] 



In spite of precautions hitherto adopted Phylloxera is apparently 

 spreading in Luxemburg. As complete eradication is impossible, the 

 necessity for adopting cultural methods is emphasised. The remedial 

 measures advocated include spraying with carbon bisulphide and the 

 grafting of indigenous vines on suitable American stocks, the possible 

 varities of which are discussed. 



Zum Reblausgesetz. [The Law against Phylloxera.] — Luxemhurger 

 Weinztg., Grevenmacher, vii, nos. 25 & 26, 20th & 31st December 

 1919, pp. 369-371, 383-387. [Received 12th March 1920.] 



The laws deahng with viticulture that have been in force since 12th 

 May 1905 and 27th July 1909 in Germany demand the entire des- 

 truction of any plots infested with Phylloxera. Subsequent exj)erience 



