Malpighi: Richardson, vol. II; Same article in _The Asclepiad_, vol. X, 1893; Atti, Life and Work, in Italian, 1847, portrait; Pettigrew, vol. II; Marcello Malpighi e l'Opera Sua, 1897, a collection of addresses at the unveiling of Malpighi's monument at Crevalcuore, that by Koelliker excellent; Locy, Malpighi, Swammerdam, and Leeuwenhoek, _Pop. Sci. Mo._, 1901--portrait and pictures from his works; MacCallum, _J. Hop. Univ. Hospit. Bull_. Malpighi's Writings: Opera Omnia, difficult to obtain, the Robt. Littlebury edition, Lond., 1687, contains posthumous papers and biography; separate works not uncommon; Traité du Ver à Soie, Montpellier, 1878, contains his life and works. Swammerdam: Life by Boerhaave in Biblia Naturæ, 1735; also Bibel der Natur, 1752; also The Book of Nature, 1758; Von Baer, Johann Swammerdam's Leben und Verdienste um die Wissenschaft, 1864, in _Reden_, vol. I; Locy, _loc. cit._--portrait. Leeuwenhoek: New biographical facts in Richardson, vol. I, p. 108; same article in _The Asclepiad_, vol. II, 1885, portrait, signature, and other illustrations; Arcana Naturæ; Selected works in English, 1758; Locy, _Pop. Sci. Mo._, April, 1901. CHAPTER V 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. CHAPTER VI The Physiologus: Carus, White (for titles see General List). Gesner: Brooks in _Pop. Sci. Mo._, 1885--illustrations; Cuvier, _loc. cit._; Jardine's Naturalist's Library, vol. VI; Gesner's Historia Animalium, 1551-1585. Aldrovandi: Naturalist's Library, vol. III; Macgilivray, _loc. cit._ Jonston: Macgilivray. Ray: Macgilivray; Nicholson; Memorial of, in the Ray Society, 1846; Correspondence of, Ray Soc., 1848. Linnæus: Macgilivray; _Janus_, vol. 8, 1903; Cuvier, _loc. cit._; Agassiz, Essay on Classification, 1859; Jubilee at Upsala, _Science_, Apl. 26, 1907; Caddy, Through the Fields with Linnæus, 1887; The Systema Naturæ, especially the tenth edition, 1758. Leuckart: Archives de Parasit., vol. I, no. 2; _Nature_, 1898. General Biological Progress from Linnæus to Darwin: Geddes, Proc. Roy. Soc. Edinb., vol. 13, 1884-1886. CHAPTER VII