646 EXPERIMENT STATION RECORD. [Vol 40 



In testing the possibility of the spores overwintering, lots of spores were 

 placed in special refrigerators and examined from time to time, from which it 

 appears that urediniospores probably do not survive a winter period of six 

 months, even under the most favorable circumstances. The viability of the 

 urediniospores appears to be very low, less than 50 per cent being capable of 

 germination three days after collection. The investigation on the action of 

 sunlight showed no toxic effects on the urediniospores as a result of exposure 

 for a few hours. 



ECONOMIC ZOOLOGY— ENTOMOLOGY. 



Wild animals of North America. E. W. Nelson (Washington: Xat. Geogr. 

 Soc, 1918, pp. 381-612, pi. 1, figs. 194). — Tllis work combines the text and illus- 

 trations of papers by the author previously noted < E. s. R., 36, p. :;:,i ; :;;i, p, 

 759). 



Wild life in our National Parks, [E. W.] Nelson (Forest and Stream, 87 

 (1017), Xo. 10, pp. 464, /''•". 497, fig*- 2). — The author reports experiments in re- 

 stocking ranges which have been made on a sufficient scale to demonstrate that 

 this is practicable. 



The fur-bearing animals, C. Kketzschmar (Les Animaux d Fourrures. 

 Chdlon-sur-SaOne, France: Smile Bertrand, 1918. /<//. XII-{-S76, ri;is. 53). — The 

 author describes the various species, their value, use of the pelt, etc. Informa- 

 tion for the use of the pelterer and furrier is included in the two concluding 

 chapters. 



Some observations on rats and their control, D. B. M \. kii; (Philippine Bur. 

 Agr. Circ. 37 (1918), pp. 8). — A popular discussion, in which it is pointed out 

 that practically 95 per cent of all damage to crops in the Philippines is charge- 

 able to depredations of one species, tin- spiny rat (Epemis mindanensis) . 



The migration of North American birds, VII, II. C. Obkbholssb (Bird 

 Lore, 20 (1918), Xo. 6. p. 415, pi. 1). 



A second bird survey at Washington, D. C, II. C. Obebhoj Si B (Wilson Bui., 

 30 (1918). Xn. f, /,/,. .-,',-1,8).— This is a report of a second survey (E. s. R., 39, 

 p. 154) in which 17 parties were engaged. 



Birds observed near Minco. central Oklahoma, A. Wetmobe (Wilson Bui., 

 30 (1918), Xos. 1, pp. 2-10; 2. pp. 56-61). 



The game birds of California. .1. Ckinnki.i . II. C. Bbyant, and 'P. I. Stobeb 

 (Berkeley: Univ. Cul., 1918, pp. X+64&, pis. 16, figs. 94). — In this contribution 

 from the Museum of Vertebrate Zoology of the University of California chap- 

 ters on the decrease of game birds in California and its causes, introduction of 

 exotic game birds, propagation, natural enemies, legislation, etc., are followed 

 by keys to the species and general accounts which Include technical descrip- 

 tions, general distribution, distribution within the State, habits, eta Of the 

 16 colored plates 12 are by L. A. Feurtes and 4 by A. Brooks. 



A bibliography of 22 pages and a complete index are Included. 



Costa's hummingbiroV. — Its type locality, early history, and name, T. S. 

 Palmer (Condor, SO (1918), No. 3. pp. 114-116). 



The Wisconsin Napaeozapus, II. H. T. .1 \< ebon (Proc Biol. Soc Wash., 32 

 (1919), pp. 9, 10). — A new subspecies, Napaeozapus insignia frutectanus, is de- 

 scribed. 



The status of the genus Orchilus Cabanis. II. C. Obebholseb (Proc, Biol. 

 Soc. Wash., 31 (1918), i>i>. 208, 204). 



Mutanda ornithologica, V, H. (J. Obebholseb (True. Biol. Soc. Wash., 32 

 (1919), pp. 7, 8). 



