230 EXPERIMENT STATION RECORD. 



formed by the species which range over the whole of the United States 

 and of those that are most abundant in the middle west; and that to 

 these are added the distinctively eastern species, such as the bobolink, 

 phcebe, bluebird, and Baltimore oriole; the western species, the dwarf 

 hermit thrush, Grace's warbler, golden-crowned sparrow, and the black 

 swift; the northern forms, the Holboell grebe, arctic tern, harlequin 

 duck, Barrow's golden eye, and some think more than 20 truly southern 

 species occurring as stragglers; and that of accidental visitors noted 

 there are 3 varieties of surf ducks and specimens of the English 

 Saxicola oenanthe, Bendire's thrasher, an olivaceous flycatcher, a white- 

 winged dove, a white ibis, a roseate spoonbill, and a scarlet ibis; and, 

 after a few remarks on the geographical and meteorological features of 

 the State, on the ornithological work previously done there, etc., a 

 classified list of the birds of the State is given; then another showing 

 dates of arrival, etc.; a bibliography of Colorado ornithology is given 

 and a history of Colorado ornithology briefly discussed, and finally a 

 systematic annotated list of the birds of the State is given. Following 

 all is a comprehensive index. 



Economic ornithology: Birds in their relation to man, W. Stone (Sclent. 

 Amer. Suppl.,43 (1S97), No. 1116, pp. 17835, 17836).— -This is condensed from a lecture 

 delivered at the Philadelphia Academy of Science. The lecturer speaks of the bene- 

 fits that man derives from birds, of birds as the farmer's friends and as his enemies, 

 and of man's influence on bird life, and finally makes a plea for the protection of our 

 feathered friends. He states that it has been calculated that there are from 700 to 

 1,000 birds to every square mile of rural district, and that, supposing each bird Avonld 

 eat 50 larvae per day, the birds of Pennsylvania would consume 1,760,000,000 insects 

 each day, or a number that might have eaten up 170,0(10 acres of grass. 



Methods in economic ornithology, with special reference to the cat bird, 

 S. I). Judi> (Amer. Nat., 31 (1897), No. 3(J,5, pp. 392-397). 



Birds considered useful to agriculture and sylviculture and measures for 

 their protection, S. Longchamps (Rapports Preliminaires 3c Congres Internat. d'Agr., 

 Bruxelles, 1895, pp. 57-75). — The insectivorous birds are listed, and a brief bibliog- 

 raphy of works relating to useful and injurious animals in Belgium is given. 



Insectivorous birds of New South Wales (Agr. Gaz. New South Wales, S (1897), 

 No. 1, pp. 25-37). 



Food of woodpeckers and flycatchers, A. J. Cook (Auk, 13 (1896), pp. 85, SO). 



Feeding habits of the English sparrow and crow, S. 1). Judd ( Auk, 13 (1896), 

 pp. 2S5-2S9). 



The common lapwing plover or peewit {Jour. JUL Agr. [London], 4 (1897), No. 

 1, pp. 11-13, fig. 1). — It is stated that no other bird is so beneficial to cultivators as 

 the common lapwing (Vanellus cristatus vulgaris). 



Titmice (Paridae) (Jour. Bd. Agr. [London], 4 (1897). No. 1, pp. 27-32, figs. 2).— A 

 popular brief account of the crested titmouse (Parus cristalus), coal titmouse (P. (iter), 

 marsh titmouse (P. palustris), great titmouse ( /'. major), blue titmouse (P. coruleus), 

 and long-tailed titmouse (P. caudatus). 



Structure of the cutaneous glands of the larvae of Ocneria dispar, N. M. 

 Koulaguixe (Ann. Agron. J nst. Moscou, 3 (1S97). No. 1, pp. 12-18, pi. 1). — In Russian; 

 French resume. The cutaneous glands of the ninth to the tenth segment are described 

 in detail. Each gland is only a gigantic cell with a ramified nucleus. Their con- 

 duits are clothed internally with a chitinous layer. 



How the common garden snail is spread about, W. S. Campbell (Agr. Gaz, 

 New South Wales, 8 (1897), No. 2, p. 115). 



