Cuvier, G. _Histoire des Sciences Naturelles_. Publiée par M. de Saint-Agy. Two vols., 1841. Taken down from Cuvier's lectures, but not revised by him. Though far from trustworthy (the first volume especially), this history mentions many interesting facts, and suggests inquiries which may be pursued with advantage. Foster, Sir M. _Lectures on the History of Physiology_. Cambridge Natural Science Manuals, 1901. Green, J. R. _History of Botany_, 1860-1900. A continuation of Sachs's History. Clarendon Press, 1909. Sachs, J. _History of Botany_, 1530-60. English translation. Clarendon Press, 1889. An outline of the History of Palæontology is prefixed to Zittel's _Handbuch der Palæontologie_, Bd. 1. (1876-80). English translation, 1900-2. The ninth edition of the _Encyclopædia Britannica_ often contains useful references. See for example the articles Biology, Embryology, Medicine, Parasitism, and Zoology. Biographical dictionaries are of course indispensable. _The Dictionary of National Biography_, the _Biographie_ _Universelle_, the _Nouvelle Biographie Universelle_, the _Allgemeine Deutsche Biographie_, and the _Biographie Nationale de Belgique_ will be frequently consulted. * * * * * Among the old authors who can be read for pleasure as well as for profit the present writer would include:— Baker, H. _The Microscope Made Easy._ Second ed., 1743.—_Employment for the Microscope._ 1753. Belon, P. _Observations de plusieurs singularitez et choses mémorables trouvées en Grece, Asie, Judée, Egypte, Arabie, et autres pays estranges._ 1553. —— _Histoire de la nature des Oyseaux._ 1555. Buffon, Comte de. _Histoire Naturelle._ Forty-four vols., of which thirty-six appeared during Buffon's lifetime. 1749-1804. Selected passages only. Cuvier, G. _Ossemens Fossiles._ 1812. Fourth ed. in ten vols., besides two of plates, 1834-36. Selected passages only. Hooke, R. _Micrographia._ 1665. Huber, F. _Nouvelles observations sur les Abeilles._ 1792. Second ed., two vols., 1814. —— J. P. _Recherches sur les mœurs des Fourmis indigènes._ 1810. Le Roy, G. _Lettres sur les Animaux._ 1781. Reprinted, 1862. Linnæus, C., and his Pupils. _Amœnitates Academicæ._ Seven vols., 1749-69. Contain interesting discussions here and there among much that is now valueless. —— _Lachesis Lapponica; or, A Tour in Lapland._ Translated by Sir J. E. Smith from the original diary. Two vols., 1811. Ray, J. _Catalogus Plantarum circa Cantabrigiam nascentium._ 1660. Réaumur, R. A. F. de. _Histoire des Insectes._ Six vols. 1734-42. Redi, F. _Experiments on the Generation of Insects._ Translated from the Italian edition of 1688 by Mab Bigelow. Chicago, 1909. Roesel von Rosenhof, A. J. _Insecten-belustigungen._ 1746-61. Turner, W. _On Birds._ 1544. Translated by A. H. Evans, 1903. INDEX AFFINITY, 17, 51 Agassiz, 122 Albrecht, 61 Aldrovandi, 13