212 



Sevastiaxov (I.). Hit Bonpocy o Mtpaxi* MCipeSneHifl iwapoKCKOM 

 Ko6bmKM B-b TypKecTaHt. (Coo6ii(eHie BTopoe h coo6u4eHie 

 Tpeibe). [On the question of the means of destroying Stauro- 

 notus maroccaniis in Turkestan. (Second and third report.)] — 

 Published by the Turkestan Entomological Station, Tashkent, 

 1915, 88 pp. [Received 7th April 1916.] 



These two reports form the continuation of a previous one [see this 

 Review, Ser. A, ii, p. 480]. In the first of them the author reiterates 

 his opinion as to the good qualities of Locusticide, based on the results 

 of its application during the campaign against locusts in Turkestan 

 in 1914 and 1915. The main difficulty appears to be to obtain the 

 material containing 36 per cent, of sodium arsenite and of pure quality. 

 In the second report a number of experiments carried out with poisoned 

 baits are described, Locusticide being the poison used. The results 

 show that in order to be effective, the proportion of Locusticide to 

 bran must be at least as 1 to 5, a higher proportion being preferable 

 (the proportion of sodium arsenite must be 1 in 8, or 1 in 9). The 

 amount of locusticide required for this method is larger than in the 

 sprays, as the poison in the baits is washed away by heavy rain, but 

 on the other hand it is quite harmless to crops in any strength and can 

 also be used in localities where there are no crops, where spraying 

 operations are not practicable. Comparative experiments with this 

 and other insecticides used as poison for the baits, showed that London 

 purple is the most suitable, being unaffected by rain. The method of 

 poisoned baits is specially important for the control of locusts invading 

 cotton plantations. In a supplement to this report, the view of 

 Uvarov [see this Review, Ser. A, i, p. 542] that spraying operations 

 can also be made use of against winged locusts during the pairing and 

 oviposition period, is confirmed. 



Sevastianov (L). YcnoBifl npoM3BOACTBa onbiTOB"b, bxcahimmxtj bt» 

 c())epy cenbCKO-xosflHCTBeHHOH dHTOMonor'm B-b TypKecraHt. 



[On the conditions of carrying out experiments in the sphere 

 of Economic Entomology in Turkestan.] — Published by the 

 Turkestan Entomological Station, Tashkent, 1915, 31 pp. 

 [Received 7th April 1916.] 



This memoir, presented to the Provincial Authority, describes some 

 of the difficulties the local entomologists have to meet, when carrying 

 out practical experiments. The author suggests that the Central 

 Government should control in some way the Russian Agricultural 

 Chemical factories, which frequently put on the market insecticides 

 and fungicides which are impure and dangerous to plants ; that an 

 analytical chemist should be appointed by the Provincial Authority, 

 and that in cases of damage to orchards resulting from the experiments, 

 the Central Authority should undertake to compensate the owners, 



Shevtchenko (P.). 063op-b cenbCKO-xo3fliicTBeHHbixT> Ky/ibTyp"b 

 KoKaHflCKaro ybSAa. [A review of agricultural cultivations in 

 the district of Khokand (province of Ferghana).]— «TypKeCTaH- 

 CKOe CenbCKOe X03flilCTB0.» [Agriculture of Turkestan], Tashkent, 

 no. 7, July 1915, pp. 706-713. [Received 10th April 1916.] 



During the first part of the summer of 1915, maize and millet were 



