Lyonet: _The Gentleman's Magazine_, LIX, 1789; the famous Traité
Anatomique, etc., 1750, 1752, not rare. Réaumur: Portrait and life in
_Les Savants Modernes_, p. 332. Roesel: Portrait and biography in _Der
monatlich herausgegebenen Insecten Belustigung_, part IV, 1761; Zeigler
in _Natur und Haus_, 1904--nine figs. Straus-Dürckheim: his monograph
on Anatomy of the Cockchafer, rather rare. The Minute Anatomists:
Straus-Dürckheim, Dufour, Newport, Leidig, etc., in Miall and Denney's
The Cockroach, 1886.
Discovery of the Protozoa: Leeuwenhoek, Müller, Ehrenberg, Dujardin,
etc., Kent's Manual of the Infusoria, vol. I. Ehrenberg: Life by Laue,
1895.