19 



Forest Investigations in British Columbia. — Agric. Gaz. Canada, 

 Ottaiva, i, no. 9, September 1914, pp. G98-699. 



Hemlock in Stanley Park, Vancouver, has been much damaged by 

 Therina caterpillars and woolly aphids. The dying and recently 

 killed trees serve as breeding places for injurious insects, especially 

 for the western hemlock bark-beetle, and should be removed during 

 autumn and winter, the denuded areas being re-forested with Douglas 

 fir. This policy should be continued as the hemlock gradually dies 

 out. Yellow and black pines, in the Okanagan district, are becoming 

 increasingly infested with bark-beetles, and the problem demands 

 immediate attention. Larches, along the Anow Lakes, are much 

 infested with a fungus and, if precautions are not taken, bark-beetles 

 will attack the weakened trees. 



VasSILIEV (Eug. M). MtpaXl. 6opb6bl Cl> 03MMblMl1 COBKaWM M 03M 

 MbIMM HepBflMH. [On the methods of fighting the imago and cater- 

 pillars of Agrotis.] — « BtCTHMKl. CaxapHOil npOMblllJJieHHOCTM.» 



[Herald of the Sugar Industry], Kiev, no. 34, Gth September 1914, 

 pp. 191-195. 



This article is a statement on behalf of the Myco-Entomological 

 Experimental Station of the All- Russian Society of Sugar Refiners in 

 Smiela by the author as to the reported appearance in the beet -growing 

 region of Russia of various cutworms, chiefly Euxoa segetum, SchifE., 

 and Feltia exclamafionis, L. In this part of Russia E. segetum has two 

 generations yearly : in the first half of June and in the first half of 

 August. 



Against the imagines, catching the insects on fermenting molasses, 

 and hand collection between 9.30 and 10.30 p.m. on the ears of grain 

 along the borders of rye fields, adjoining land overgrown with weeds, 

 are recommended. This is not practicable against the second genera- 

 tion, as at the time of their appearance the harvest is already over. 

 They are particularly numerous after a night of rain and the same 

 phenomenon is noticed in the laboratory, where, after the washing of the 

 floors, the insects emerge in large numbers. According to Rossikov, 

 hand collection is preferable to catching on molasses in cold or wet 

 weather, but in the opinion of the author, this may be true so far as 

 North Russia is concerned, but in South Russia the rains are mostly 

 of short duration and the rain-water which gets into the troughs 

 evaporates quickly. 



Against the eggs of this pest the method of " occupied fallow land," 

 as recommended by Rossikov [see this Review, Ser. A, ii, pp. 314-316] 

 is advocated, and this remedy also deserves attention with regard to 

 beet plantations ; it will affect directly the first generation of the pests 

 and indirectly, the second one, and its influence will be specially great 

 in rainy years, when fallow and other fields become rapidly overgrown 

 with weeds. The destruction of the eggs and larvae is assisted by 

 spraying the grasses mown down in the fallow fields, boundary strips, 

 etc., as well as the crops, with kerosene, caustic lime, a five per cent, 

 solution of barium chloride or one-half per cent. Paris green. Other 

 measures include : trenches about seven inches deep, with pits at inter- 

 vals, in order to isolate the attacked spots, the trapped caterpillars 



(Clio) b2 



