320 DWIGHT 



Altum, B. 



'54 Ueber die Farben der Vogelfedern im Allgemeinen, liber 

 das Schillern insbesondere 

 Naiunaunia. 1854. pp. 293-304 



Altum, B. 



'67 Aberrationen [in der Farbung der Vogel] 

 Journ.f. Oni., XV. 1867. PP- 85-89 



American Ornithologists' Union. 



'95 Check list of North American birds prepared by a com- 

 mittee of the American Ornithologists' Union 

 Second and Revised Edition. 8vo. pp. xi, 372. New 

 York. 1895 



[Anon— "An Old Bushman."] 



'66 On the change of plumage in the common Crossbill {^Loxia 

 curvirostra^, with a few remarks on their breeding and 

 , other habits 



Intellectual Observer, VIII. 1866. pp. 188-196 



Aristotle (384-322 B. C.) 



Opera omnia {^Historia anitnaliiim Lib. Ill, cap. 12), 

 Venitiis, 1497 — editio princeps and many later 



Bachman, J. 



'39 Observations on the changes of colour in birds and quadru- 

 peds 



Trans. Anier. PJiilos. Soc. (Phila.), n. ser., VI. 1839. 

 pp. 197-239 



Barrows, W. B. 



'84 Abnormal coloration in a caged Robin 

 Auk, I. 1884. p. 90 



Barrows, W. B. 



'85 Abnormal coloration in a caged Robin 

 Auk, II. 1885. P- l^Z 

 Beckham, C. W. 



'85 Remarks on the plumage of Regulus calendula 



Proc. U. S. Nat. Mus., VIII. 1885. pp. 625-628 

 Reviewed by Allen, J. A., Auk, III. 1886. p. 268 



Beckham, C. W. 



'86 Changes in the plumages of Geothlypis trichas 

 Auk, III. 1886. pp. 279, 280 



Beckham, C. W. 



'86 First plumage of the Summer Tanager (^Piranga 7'ubra) 

 Auk, III. 1886. p. 487 



