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.

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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

Camper: Naturalist's Library, vol. VII; Vorlesungen, by his son, with short sketch of his life, 1793; Cuvier, loc. cit.; Kleinere Schriften, 2 vols. with copper plates illustrating brain and ear of fishes, etc., 1782-1785. John Hunter: The Scientific Works of, 2 vols., 1861; The Asclepiad, vol. VIII, 1891; the same article with illustrations in Richardson, loc. cit.; Pettigrew, loc. cit. Vicq d'Azyr: Cuvier, loc. cit.; Huxley in Life of Owen, p. 289; His works in 6 vols., 1805. Cuvier: Life by Flourens; Memoirs by Mrs. Lee, 1833; Buckle, Hist. Civ., vol. I, p. 633 et seq.; Lettres de Geo. Cuvier à C.M. Paff, 1788-1792, translated from the German, 1858. Cuvier's numerous writings—The Animal Kingdom, Leçons d'Anat. Comparée, etc.—are readily accessible. H. Milne-Edwards: Biographical sketch in Ann. Rept. Smithson. Inst, for 1893. Lacaze-Duthiers: Life with portraits in Archives de Zool. Expériment., vol. 10, 1902. Richard Owen: Life and Letters, 2 vols., 1894; Clark, Old Friends at Cambridge and Elsewhere, p. 349 et seq. J. Fr. Meckel: Carus, loc. cit. Gegenbaur: Erlebtes und Erstrebtes, portrait, 1901; Anat. Anz., vol. 23, 1903; Ann. Rept. Smithson. Inst., 1904. Cope: Osborn in The Century, vol. 33, 1897; Gill, Edward Drinker Cope, Naturalist, A Chapter in the History of Science, Am. Naturalist, 1897; Obituary notice, with portraits, Am. Naturalist, 1897; Pop. Sci. Mo., vol. 19, 1881.

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