Scale papillae
Found in 2 Collections and/or Records:
Letter to James Cossar Ewart from James Peter Hill, 08 July 1922
Hill apologises for the long delay in replying to Ewart's letter. He states that he has no knowledge concerning the appearance of scale papillae, but will hunt for any hybrid embryos he has preserved in spirit and send them on.
Letter to James Cossar Ewart from John Walter Gregory, 29 January 1929
Gregory writes that he is interested in the photographs Ewart sent him. He imagines that hairs and scales probably arose from different types of papillae and that the hair developed between the scales and gradually replaced them as the animals required more thermal protection.