Newbigin, Marion I. (Marion Isabel), 1869-1934 · London, J. Murray · leaf 284
269 THE COLOURS OF BIRDS XIII bands near the tip of the general contour-feathers, or as longitudinal bands at the edges of the quill-feathers. … Fig. 2. — Barb and barbules from feathers of sun-birds, magnified to show the peculiar structure of metallic barbules. a is a barb bearing both proximal and distal barbules, the lower barbules being partially, the upper completely metallic. b, non-metallic distal barbules from a tail-cjuill of a…
Animals -- Color · Plants -- Color
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
