320 DWIGHT 



Altum, B. 



'54 Ueber die Farben der Vogelfedern im Allgemeinen, iiber 



das Schillern insbesondere 

 Naumannia. 1854. pp. 293-304 



Altum, B. 



'67 Aberrationen [in der Farbung der Vogel] 

 Journ.f. Orn., 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 animalium 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. Amer. Philos. 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- 303 

 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 rubra] 

 Auk, III. 1886. p. 487 



