56 EXPEKIMENT STATION RECOKD. [Vol.41 



Our national elk herds, H. S. Graves and E. W. Nelson (In The Open, 9 

 (1919), Nos. 1, pp. 33-38; 2, pp. 26-3^. pi. 1, figs. 2). 



iThe mongoose in the West Indies] {Bui. Dept. Agr. Trinidad and Tohago, 

 n {1918), No. 4, pp. 167-192).— A paper by C. B. Williams on The Food of the 

 Mongoose in Trinidad (pp. 167-186), which records the stomach contents of ISO 

 mongooses collected during the year October, 1917, to September, 1918, is fol- 

 lowed by a paper on Rats and Mongoose in the West Indies (pp. 187-190) and 

 the text of the mongoose ordinance, 1918 (pp. 190-192). 



The muskrat in Bohemia, H. W. Feickhinger {Nattirw. Wchnschr., 3S 

 (1918), Nos. 5, pp. 65-72; 6, pp. 73-81, figs. 26). — A discussion of the occurrence 

 and economic importance of the muskrat, control measures, etc. A bibliography 

 of 43 titles is appended. 



The birds of economic importance, A. Godard (Les Oiseaux Necessaires a 

 V Agriculture, a la Sylviculture, a la Viticulture, a V Arboriculture, et a I'Hy- 

 gi^ne PubliQue. Paris: Perrin d Co., 1917, pp. 11+121, figs. 18).— A small 

 handbook. 



An early experiment in keeping hummingbirds in captivity, T, S. Palmer 

 (Condor, 19 (1917), No. 5, p. 168). 



Another reference to early experiments in keeping hunamingbirds in cap- 

 tivity, T. S. Palmer (Condor, 20 (1918), No. 3, pp. 123, 124). 



Notes on the insect fauna of bank swallows' nests in Virginia, T. B. 

 Snyder and R. C. Shannon (Proc. Ent. Soc. Wash., 21 (1919), No. 5, pp. 

 110-112). 



Class book of economic entomology, with special reference to the economic 

 insects of the northern United States and Canada, W. Lochhead (Philadel- 

 phia: P. Blakiston's Son <C- Co., 1919, pp. XIV+436, figs. 265).— This work con- 

 sists of four parts, the first of which (pp. 1-69) deals with the structure, growth, 

 and economics of insects ; the second ( pp. 71-92 ) , with the identification of 

 insects injurious to farm, garden, and orchard crops, etc. ; the third (pp. 93-371), 

 with tlie classification and description of common insects; and the fourth (pp. 

 373-413), with the control of injurious insects. 



A method for the preservation of insect larvae and pupae, F. S. Jackson 

 (Canad. Ent., 51 (1919), No. 5, pp. 117, 118). — The author describes a method 

 that may be used in the preservation of insects of all stages, including lepidop- 

 terous larvje, by which both the form and color are preserved. 



After the specimens are killed in the cyanid bottle or by means of chloroform 

 vapor they are allowed to relax, and then placed in a fluid consisting of cane 

 sugar 10 parts, glacial acetic acid 5 parts, formalin 2 parts, and distilled water 

 100 parts. The sugar is dissolved in the water and the acetic acid and formaUn 

 subsequently added. The specimens are allowed to remain in this fluid for 

 about 24 hours, when they are transferred directly to a fluid identical in com- 

 position except that the acetic acid is omitted. After remaining in the second 

 fluid for about 24 hours the fluid should be changed, and in case of large speci- 

 mens a further renewal after the lapse of a week or ten days is advisable, since 

 traces of acetic acid tend in some instances to destroy the color. 



Plants used as insecticides, R. C. Roark (Amer. Jour. Pharm., 91 (1919), 

 Nos. 1, pp. 25-37 ; 2, pp. 91-107). — An annotated list which calls attention to 

 promising insecticidal plants. 



Fungoid and insect pests and their control. — I, Vegetable and pulse crops, 

 F. O. Mosley (Reading, [Eng.]: Author, 1918, pp. 26, figs. 52). — Brief descrip- 

 tions are given of several of the more important insect enemies of vegetable 

 and pulse crops. 



The insect pests of maize, W. B. Gurnet (Agr. Oaz. N. 8. Wales, SO (1919), 

 No. S, pp. 196-202, pi. 1, figs. 4). — In addition to the species dealt with in the 



