344 DWIGHT 



Waldeyer * 



'82 Untersuchungen fiber die Histogenie der Horngebilde, 

 insbesonders der Haare und Federn 



Beitrage zur Anat. u. Embryo L als Festschrift fur Jacob 

 Henle, Bonn. 1882 



Wayne, A. T. 



'91 An abnormal specimen of the Nonpareil {Passerina ciris} 

 Auk, VIII. 1891. p. 395 



Weinland, D. F. 



'56 Zur Verfarbung der Vogelfeder ohne Mauserung 

 Journ. f. Orn., IV. 1856. pp. 125-129 



Weinland, D. F. 



'56-'59 The cause of the change of color in the feathers of birds, 

 and in the hairs of Mammalia, and the manner in which 

 this change is effected 

 Proc. Boston Soc. Nat. Hist., VI. 1856-59 pp. 34-37 



Weiske, H.* 



'89 Untersuchungen iiber die Qualitat der Vogelknochen und 

 Federn in verschiedenen Altersstadien 

 Landwirthschaftlichen Versuchsstationen, XXXVI. 1889. 

 p. 81 



Wheelwright, G. 



'62 On the change of plumage in the Crossbills and Pine Gros- 

 beak 



Zoologist, XX. 1862. pp. 8001, 8002. Quoted from 

 "Field" (newspaper), March 22, 1862 



Wheelwright, G. 



'63 Change of plumage in the Crossbills 

 Zoologist, XXI. 1863. p. 8492 



Quoted from "Field" (newspaper), November 15, 1862 

 Whitear, W. 



'18 Remarks on the changes of the plumage of birds 



Trans. Linn. Soc. (London.) XII. pt. 2. 1818. pp. 



Wray, R. S. 



'87 On some points in the morphology of the wings of birds 



Proc. Zool. Soc., (London.) 1887. PP- 343-357, pis 

 XXIX-XXXII (XXX and XXXII col'd) 



