THE recent report of the Committee on Locust Control is the sixth of its kind which deals with locust outbreaks in the regions mentioned. In the present instance it covers the year 1936 and the early part of 1937, and has been prepared by Dr. B. P. Uvarov and Miss W. Milnthorpe. The report is a survey of the conditions in the territory named and is based upon the accumulated data which has come to hand as the result of international organization. It appears that the general situation, in so far as the African migratory locust and the red locust are concerned, is steadily improving. Particular stress, however, is laid on the beginning of a new outbreak of the desert locust which has been definitely proved to be forming in the Sudanese-Arabian area. It has been due to the regular system which is operating for the recording and collection of all data relating to locusts, and its centralization in a single institution (the Imperial Institute of Entomology), that the first signs of this outbreak have been recognized and warnings issued to all countries likely to be affected by the locust in question. The concerted measures which are being undertaken in order to endeavour to fathom the causes of locust outbreaks merit every support. The elaborate organization which has been built up and got into working order at the prime instigation of Dr. Uvarov provides the only sound method of attack—mere remedial measures are temporary palliatives and leave the locust menace unimpaired. At the present stage of the work, no effort should be relaxed, and it is up to the countries directly interested to see that the necessary funds are maintained. The report is available, price 3s. net, and is published by H.M. Stationery Office.