407 



The nicotine content of denatured offal snuff is rather variable, but 

 should average 1| per cent, from cigarette leaf and 1 per cent, from 

 ground leaf-stalks and heavy dark pipe tobacco. An effective spray 

 can be made by mixing tobacco offal in the proportion of 1 lb. offal 

 to H gals, of water, and allowing the mixture to stand in a cool place 

 for 72 hours, after which it should be ver}^ thoroughly strained. 

 Further investigations are being conducted respecting the efficiency 

 of this spray, with special reference to the possibility of extracting 

 the maximum quantity of nicotine from the offal, the optimum degree 

 of dilution and the setting free of the nicotine from chemical 

 combination. 



Restrepo (A. G.). Sobre una Enfermedad del Cafeto. [A Disease 

 of Coffee.] — Rev. Agric, Bogota, vi, no. 6, June 1920, pp. 326- 

 327. [Received 7th June 1922.] 



In this communication to the Colombian Ministry of Agriculture 

 attention is drawn to the ravages of the coffee berry-borer, Stephanoderes 

 hampei, in Java. In San Paulo, Brazil, where in the past shipments 

 of seed have been received from Java, such importation is now 

 prohibited. 



Vorsichtsmassregeln zur Verhiitung von Ungliicksfallen beim Gebrauch 

 von arsenhaltigen Mitteln (Schweinfurter Griin, Uraniagriin usw.) 

 gegen Pflanzenschadlinge, insbesondere gegen den Heu- und 

 Sauerwurm. [Precautionary Measures against Accidents in the 

 Use of Arsenicals against Pests of Plants, especially the Spring 

 and Summer Generations of the Vine-moths.] — Nadir ichtenbl. 

 dentschen PflanzenschtUzdienst, Berlin, ii, no. 6, 1st June 1922,, 

 p. 43. 



The use of arsenical poisons in agricultural practice has only 

 recently been adopted in Germany. These rules have been drawn up 

 by the Imperial Ministry of Health and the Imperial Biological Institute 

 for Agriculture and Forestry for the protection of those unfamiliar 

 with such preparations. 



FoRsius (R.). Ueber einige palaarktische Tenthredinini. [On some 

 Palaearctic Tenthredininae.]- — Medd. Soc. Fauna et Flora Fennica, 

 Helsingfors, xliv (1917-1918), 1918, pp. 141-153. [Received 

 9th June 1922.] 



Some of the results of a revision of the author's work on the 

 sawflies of the old world are given. A new subgenus, six new species 

 and nine new varieties are erected. 



LiNNANiEMi (W. M.). Aleurodes fragartae and Trioza alacris. — Medd. 

 Soc. Fauna et Flora Fennica, Helsingfors, xliv (1917-1918), 

 1918, p. 57. [Received 9th June 1922.] 



Aleurodes fragariae was abundant on garden strawberries and the 

 Psyllid, Trioza alacris, occurred on laurel in greenhouses. Both species 

 are new records for Finland. 



