66 

 UvARov (B. p.). riyib KT. paflMKanbHony pasptiueHiio capaHHeearo 



BOnpoca Ha C-feBepHOm-b KaBKaat. [The Way to the radical Solu- 

 tion of the Locust Question in North Caucasia.] « HDro-BoCTOM- 

 HbiA X03flMHT».» [The South-Eastern Farmer], Rostov-on-Don, 

 xiii, no. 10, 10th June 1917, pp. 10-13. [Received 19th December 

 1917.] 



The author gives an outline of a scheme for the creation of a central 

 anti-locust bureau for North Caucasia, the drawing up of which has 

 been entrusted to him by a conference of the local authorities of the 

 provinces concerned. 



The effective control of locusts in North Caucasia has always been 

 hampered by the absence of proper co-ordination between the 

 respective organisations of various provinces, which are not all equally 

 interested in the destruction of these pests. For instance, the chief 

 breeding places of Locusta migratoria nn North Caucasia are 

 concentrated on the coast of the Caspian sea, between the mouths of 

 the Terek and Volga, but owing to the scanty population of these 

 localities and their low agricultural development, the economic 

 importance of the pests on the spot is small and the provinces of Terek 

 and Astrachan in which they lie have no reason to indulge in expensive 

 operations for their destruction ; this is not the case with the 

 neighbouring province of Stavropol, and the rest of North Caucasia, 

 which are the chief sufferers from the migrating locusts. The 

 organisation of a central bureau for the whole of Caucasia has thus 

 attained an urgent importance, and the above-mentioned conference 

 decided to create such a bureau and to concentrate in its hands the 

 control of locusts over the whole area affected. According to the 

 author's scheme, the authorities of the separate provinces of this area 

 should participate in the organisation of the bureau, financially and 

 otherwise, and should transfer to it everything relating to the control 

 of locusts. The proposed bureau will conduct investigations as to the 

 breeding places and distribution of locusts and be solely responsible 

 for their actual control ; its funds are to be provided by grants from 

 the Central Government, its work being of national importance, and 

 also from local contributions. As a controlling body, a North Caucasia 

 Anti-Locust Committee is proposed, consisting of representatives of 

 the Department of Agriculture, the local municipal authorities and 

 entomological organisations, the Director of the Central Bureau being 

 also a member of the Committee. The projected work of the Bureau 

 for each year as well as its reports must be submitted to this Committee 

 for approval. 



Rutgers (A. A. L.). Verslag van den Directeur van het Algemeen 

 Proefstation der A.V.R.O.S., 1 Januari-30 Juni 1917. [Report of 

 the Director of the General Experiment Station of the General 

 Association of the Rubber-planters of the East Coast of Sumatra,, 

 1st January to 30th June 1917.] — Batavia, 1917, 34 pp. [Received 

 8th December 1917.] 



The entomological material received included a small white mite, 

 as yet unidentified, which injured the very young leaves of Hevea, 

 both on nursery and older plants. In the case of the former, spraying 

 with lime-sulphur proved very effective, but even better results were 



