Abstract
UNDER this denomination is understood the step-back from the normal state of an animal to that of a more primitive one. I was undergoing the strong sun-cure in Grado, an island in the Adriatic Sea, where the full sun shines for weeks together, with only slight interruptions, exposing to it the naked skin from morning until evening during the whole day. Belonging to the fair type, my body was only in some parts covered with spare hair. After some time perfectly new, very fine hair was formed on all parts of the body, and after the lapse of five weeks there was a remarkably thick cover of fine, very light hair even on those parts of the body where there was not a trace before, to prevent the body, which became dark red-brown, from being burnt. This observation has been made by me repeatedly for fifteen years, but it is not easy for others to repeat it.
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BRAUNER, B. Retrograde Metamorphosis. Nature 116, 644 (1925). https://doi.org/10.1038/116644c0
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DOI: https://doi.org/10.1038/116644c0
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