SOUTH AFRICAN JOURNAL OF SCIENCE, VOL. XIX. PLATE IV. 



Fig. 1. 



Fig. 2. 

 ORIGIN OF FEATHERS FROM SCALES. 



SOUTH AFRICAN JOURNAL OF SCIENCE, VOL. XIX. PLATE V. 



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Fig. 4. 



Fig 5. 

 ORTCtIN OF FEATHERS FROM SCALES. 



To face pngn 26S. 



