PLATE V 



DwiGHT — Plumage and Moult 



Photomicrographs illustrating Natal Down adhering to tips of Ju- 

 venal Plumage feathers. 



Fig. I. DoUchonyx ojyzivonts, crown feather bearing Natal 

 Down. Specimen in the collection of J. Dwight, Jr. , 

 No. 1943, July 28th. (Enlargement about 5 dia- 

 meters. ) 



Fig. 2. Cistot]io7'iis palustris, crown feather bearing Natal 

 Down. Specimen in the collection of J. Dwight Jr., 

 No. 4214, Aug. 20th. (Enlargement about 15 dia- 

 meters.) 



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