Creel (C. W.) & Eockwood (L. P.). The Control of the Clover-Flower 

 Midge. — f/. aS. Dept. Agric, Washington, B.C., Farmers' Bui', 

 no. 971, June 1918, 12 pp., 6 figs. [Received 29th October 1918.] 



The life-history and habits of Perrisia (Dasgneura) legmnimcola , 

 Lint., have previously been described and its control discussed [see 

 this Review, Ser. A, iii, p. 266, and v, p. 325]. The present bulletin 

 gives practical directions to farmers regarding pasturing, early and 

 late cutting of the clover crop, the clipping back of clover between 

 the 10th and 25th May, leaving the cUppings on the ground as a mulch, 

 and soiling, i.e., cutting the clover and using it as green fodder during 

 spring and early summer. 



Wallace (E.) & Evans (L. H.). Commercial Bordeaux Mixtures. 

 How to Calculate their Values. — XJ.S.Dept. Agric, Washington, 

 B.C., Farmers' Bull. no. 994, June 1918, 11 pp., 1 fig. 



This bulletin describes a method by which the strength of commercial 

 Bordeaux mixtures can be calculated in terms of the amount of equiva- 

 lent copper sulphate in 50 gallons when diluted. Two tables are 

 given by which the strengths can be approximately determined 

 without calculation. Physical properties, such as adhesiveness, 

 texture, spreading quality and rate of setthng are also important 

 factors in determining the efficiency of Bordeaux mixtures ; some 

 tests in this connection are described. 



Tempany (H. a.). Regulations and Syllabus of the School of 

 Agriculture. — Mauritius Dept. Agric, Port Louib, Gen. Ser. Bull, 

 no. 10, 10th June 1918, 10 pp. [Received 31st October 1918.] 



The first year syllabus of requirements for diplomas granted by the 

 Mauritius Department of Agriculture includes the following ento- 

 mological subjects : — The place of insects in the scale of animal life ; 

 general characters of insects differentiating them from other animals ; 

 the natural orders into which insects are divided, and the diagnostic 

 characters of each order ; metamorphosis of insects of each order ; 

 the structure and organs of common insects. Identification of the 

 proper order of common insects ; life-history and habits of common 

 insects of each order ; identification of the various stages of important 

 insects. The relation between insects and agriculture ; harmful 

 and beneficial insects ; simple treatment of insect pests. Collection, 

 mounting, and preservation of insects ; permanent mounting of insects 

 for microscopical examination. 



d'Emmerez de Charmoy (D.). L'Importation de Tivhia parallela de 

 la Barbade a Maurice. [The Importation of Tiphia jjarallela from 

 Barbados to Mauritius.] ■ — Mauritius Dept. Agric, Port Louis, 

 Serie Scient. Bull. no. 6, 1918, French Edition, 11 pp., 1 plate, 

 1 map. 



The memoir of which this is a translation has already been noticed 

 [see this Review. Ser. A, v, p. 502]. In an appendix the following 

 facts are given : — T. parallela was noticed in considerable numbers 

 in two localities in May ; during this month the percentage of females 



