350 EXPERIMENT STATION RECORD. 



A detailed account is given of the general habits, food, and economic status 

 of the golden eagle, gray sea eagle, and bald eagle. In the case of each one 

 of these species its distribution and the extent of its destruction by man are 

 mentioned. 



The economic relations of seed crows as based on an examination of 

 stomach contents during a period of 11 years, M. Hollrung {Landw. Jahrb., 

 3.5 (1906), No. //, pp. .579-620, fig. i).— During the years 1895 to 1905, inclusive, 

 the stomachs of seed crows were examined for the purpose of learning their 

 feeding habits. Many inquiries were made personally and through agricul- 

 tural newspapers with i-egard to this question in parts of the Province of 

 Saxony. 



The material at the di.sposal of the author was unusually extensive and a 

 careful examination was made of about 4,000 stomachs of these birds. It 

 appears that the seed crows are omnivorous, feeding upon seeds, animals, 

 various kinds of waste material, and mineral matter. Occasionally the birds 

 are charged with killing young hare and injuring cereals. Barley, oats, rye, 

 wheat, corn, buckwheat, and other vegetable material were found in the 

 stomachs of the seed crows. On the other hand, the birds destroyed cock- 

 chafers, wireworms, various caterpillars, and snout beetles which are injurious 

 10 cultivated crops. Under ordinary conditions, therefore, it is believed that 

 the destruction of seed crows is not justified. 



Birds as conservators of the forest, F. E. L. Beal (A'^. Y. State Forest, 

 Fish and Game Com. Ann. Rpt., 8-9 (1902-3), pp. 236-27J,. pis. l.'t, figs. 2).— In 

 this article particular attention is given to a discussion of the habits of birds 

 which spend a large part of their time in forest trees. The benefits derived 

 from the destruction of forest insects^by these birds are mentioned and notes 

 are also given on the injury caused to trees by a destruction of buds. The 

 birds studied in this connection include woodpeckers, titmice, creepers, warb- 

 lers, cuckoos, etc. 



The squirrels and other rodents of the Adirondacks, F. C. Paulmieb (N. Y. 

 State Forest, Fish and Game Com. Ann. Rpt.. S-9 (1902-3). pp. 33.5-3.51. pis. 

 Jf). — In the State of New York, 28 species of rodents are recognized. In the 

 present article brief notes are given on the habits of the more conspicuous 

 species with pai'ticular reference to their food and economic relations. 



Destruction of rats and mice in fields, C. Macias (Com. Par. Agr. [Mexico], 

 Circ. .'il. pp. 25. figs. 28). — Brief notes are given on the injuries caused by vari- 

 ous species of mice to cultivated crops. A number of formulas are given for the 

 pi'eparation of poisoned baits to destroy these pests and suggestions are made 

 regarding a great variety of traps also used for this purpose. 



Notes on the destruction of injurious vermin, C. M. Johnston (Orange 

 River Colony Dept. Agr., Biol. Div. Leaflet 1, pp^ 7). — In eradicating jackals 

 strychnin is the drug which is most commonly used in poisonous baits. At 

 present, however, it is more difficult to induce the jackals to eat the bait than 

 was formerly the case. 



Notes are given on the methods of preparing poisonous baits and on the use 

 of traps and other methods for destroying rabbits, baboons, and grain-eating 

 birds. 



The frog book, Mary C. Dickerson (Neiv York: Donhleday, Page d Co., 

 1906, pp. XVII+253, pis. 112, figs. 5.5).— The biology and feeding habits of North 

 American spadefoot toads, common toads, tree frogs, and frogs are given 

 together with elaborate descriptions of the appearance of the various species. 

 The economic relations of frogs and toads are discussed and notes are given on 

 the nature of their food. The illustrations of the different species are of 

 unusual excellence. 



