39 



mature and carefully studied efforts .... it fills a field of usefulness 

 peculiarly its own ..... W. B., Hull. Xutt. Ornith. Club, Vol. VII., pp. 

 242-246, October, 1882. 



DUBOIS, ALPHONSE. De la Variabilito des Oiseaux du genre Loxia. 

 Par M. Alph. Dubois, Conservateur au Musee royal d'histoire 

 naturelle de Belgique. Extrait du Bulletin du Musee royal 

 naturelle de Bclyique. Tome I. Oct., 1882. 



. . . .These varieties, races, or subspecies, he holds to be the result 

 of the action of climate, food, or other "fortuitous causes" upon size 

 and coloration, and states that his morphological studies have demon- 

 strated that species are variable in proportion to the extent of their area 

 of dispersion ..... J. A. A., Bull. Null. Ornill,. Club, Vol. VIII., p. 170, 

 July, 1883. 



DUTCHER, WILLIAM. Is Not the Fish Crow (Corvus ossifragus Wil- 

 son) a winter as well as a summer resident at the northern limit 

 of its range ? By William Dutcher. Transactions of the Linncean 

 Society of New York. Vol. I., pp. 107-111, December, 1882. 



... .is short, occupying less than three pages. . . .The evidence cited 

 is apparently conclusive. .. . W. B., Ball. XM. Ornith. Ciub, Vol. VIII., 

 p. 54, January, 1883. 



FORBES, S. A. The Regulative Action of Birds upon Insect Oscilla- 

 tions. By S. A. Forbes. Bull. No. 6, Illinois State Laboratory of 

 Nat. Hist., Dec., 1882, pp. 1-31. 



Our best authority upon the insect food of birds has continued his 

 observations upon the subject ...The paper is very carefully worked 

 up to show how effectively birds may restore a disturbed balance of life 

 ....We trust Professor Forbes will not desist from his good work. 

 Such exact data as these are just what is required for the solution of the 

 general problem which is offered by the relations of the bird-world to 

 agriculture. E. C., Bull. Nu.lt. Ornith. Club, Vol. VIII., pp. 105 107, 

 April, 1883. 



GENTRY, THOMAS G. Nests and Eggs of the Birds of the United 

 States [Pennsylvania] . 4to. 50 colored Plates. 1882. 



Part I. of this new enterprise. .. .has reached us .. The text of 

 this number is meritorious, and the plates are not. . . . E. C., Bull. Nutt. 

 Ornith. Club, Vol. V., p. 179, July, 1880. 



HARVIE-BROWN, JOHN A., CORDEAUX, JOHN, and NEWTOX, ALFRED. 

 Report of the Committee, consisting of Mr. J. A. Hurvie-Browu, 

 Mr. John Cordeaux, and Professor Newton, appointed at Swansea 

 " for the purpose of obtaining (with the consent of the Master and 

 Brethren of the Trinity House, and of the Commissioners of 

 Northern Lights) observations on the Migration of Birds at 

 Lighthouses and Lightships, and of reporting on the same, at 

 York, in 18,1." London: Printed by Spottiswoode and Co.. 

 New-Street Square and Parliament Street. [1882.] 8vo., pp. 8. 



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