Traite de la lumière, Leyden, 1690. Complete works were published at The Hague in 1888, under thetit le Ouvres complètes, by the Société Hollandaise des Sciences. These books have not been translated into English. Huygens's famous paper on the laws governing the collision of elastic bodies appeared in the Phil. Trans, of the Royal Society for 1669.
Kepler, Johann. See vol. ii., p. 70.
Astronomia nova de motibus Stella Mortis, Leipzig, 1609, contains Kepler's two first laws; and Harmonices mundi, 1619, contains the third law, Phomomenon singulare, seu Mercurius in sole, Leipzig, 1609. Joannis KepUri opera omnia, in 8 vols., Frankfort, 1858-1871.
Leeuwenhoek, Anthony van. See vol. ii., p. 179.
His discoveries are mostly recorded in the Phil. Trans. of the Royal Society, between the years 1673 and 1723—one hundred and twelve papers in all. His discovery of bacteria is recorded in Phil. Trans, for 1683; and that of the discovery of the capillary circulation of the blood in Phil. Trans, for 1790.
LiNNiEus, Carolus (1707-1778). See vol. ii., p. 299.
His Systema natures was published in 1735. Tro years later (1737) he published Genera plantarum, which is generally considered as the starting-point of modern botany. His published works amount to more than one hundred and eighty.
Mariotte, Edme (died 1684). See vol. ii., p. 210.
Essais de physique (four essays), Paris, 1676-1679. 250
His De la nature de l'air, containing his statement of the law connecting the volume and pressure of a gas, is contained in the second essay.