68.

Principles of Chemistry, 2 vols., London, 1868-1870. (There have been several subsequent editions.)

Oersted, Hans Christian. See vol. iii., p. 236.

Experiments with the Effects of the Electric Current on the Magnetic Needle, published at Berlin, 1816.

Priestley, Joseph. See vol. iv., pp. 20, 36.

Experiments and Observations on Different Kinds of Air, 3 vols., Birmingham, 1790. History of Electricity, 256 vol. ii., p. 280, London, 1775. The Doctrine of Phlogiston Established, 1800.

Ramsay and Ravlbigh. See vol. v., p. 86.

"On an Anomaly Encountered in Determining the Density of Nitrogen Gas,"

in Proc. Roy. Soc, April, 1894. A statement of the properties of argon was made by the discoverers to the Royal Society, given in Phil. Trans., clx.x.xvi., p. 187, January, 1895.

ScHBBLB, Karl William. See vol. iv., p. 23.

Om Brunsten, eller Magnesia, och dess Egenakaper, Stockholm,1774. This contains his discovery of chlorine. His book, Chemische Abhandlung von der Luft und dent Feuer, was published in 1777.

Thompson, Benjamin (Count Rumford). See vol. iii., p. 208. Essays Political, Economical, and Philosophical (2 vols.), vol. ii., pp.

470-493, London, T. Cadell, Jr., and W. Davies, 1797. Thomson, William (Lord Kelvin). See vol. iii., p. 276.

On a Universal Tendency in Nature to the Dissipation of Mechanical Energy, in Transactions of the Royal Society of Edinburgh, 1852.

Wollaston, William Hyde. See vol. iv., p. 41.

Phil. Trans, for 1814, vol. civ., p. i, contains a synoptic scale of chemical equivalents. This paper was confirmatory of Dalton's theory.

Young, Thomas. See vol. iii., p. 218.

On the Colors of Thin Plates I.e. in Phil. Trans, for 1802, pp. 35-37.

V.--MODERN BIOLOGICAL SCIENCES

Avenbruggbr, Lbopold. See vol. iv., p. 200.

Inventum novum ex percussione thoracis humant interni pectoris morbos detegendi, Vienna, 1761. vot. V.-17 257

Bell, Sir Charles See vol. iv., p. 249.

An Exposition of the Natural System of Nerves of the Human Body, being a Republication of the Papers delivered to the Royal Society on the Subject of the Nerves in 1811, etc.

Bernard, Claude. See vol. iv., p. 137.

BOERHAAVB, HERMANN. See Vol. IV., p. 182.

Inst.i.tutions medicos, Leyden, 1708; and De chemie expurgante suos errores, Lugduni Batavorum, 1718. Brown, Robert. See vol. iv., p. 115.

On the Organs and Mode of Fecundation of Orchideo and Asclepiadeo, in Miscellaneous Botanical Works, London, 1866.

Chambers, Robert. See vol. iv., p. 161.

Vestiges of the Natural History of Creation, London, 1844 (published anonymously). His Sequel to Vestiges was published a year later.

Charcot, Jean Martin. See vol. iv., p. 269.

Lecons sur Us maladies du systeme nerveux, Paris, beginning in 1873.

Cuvier, George, Baron de. See vol. iv., p. 159.

Histoire naturelle des animaux sans vertebres, Paris, 1815. Systeme des connaissances positives de Vhomme, Paris, 1820.

Darwin, Erasmus. See vol. iv., pp. 94, 147.

The Botanic Garden, London, 1799. The Temple of Nature, or The Origin of Society, edition published in London, 1807. Darwin, Charles. See vol.

iii., p. 95, and vol. iv., p. 173. The Origin of Species, London, 1859.

Pechner, Gustav. See vol. iv., p. 263. Elemente du Psychophysik, i860.

Flourens, Marie Jean Pierre. See vol. iv., p. 270.

Experiences sur le systeme nerveux, Paris, 1825. Cours sur la generation, Vovologie, et Vembryologie, Paris, 1836, etc.

Gall, Franz Joseph. See vol. iv., p. 248.

Recherches sur le systeme nerveux en general, et sur celui du cerveau en particulier, Paris, 1809. (This paper was laid before the Inst.i.tute of France in March, 1808.) Goethe, Johann Wolfgang. See vol. iv., p. 140.

Die Metamorphose der Pflanzen, 1790. Gray, Stephen. See vol. ii.t p.

262.

Most of his original papers appeared in the PhU. Trans, between 1720 and 1737.

Haeckel, Ernst Heinrich. See vol. v., p. 144.

Naturlich Schopfungsgeschichte, 1866, rewritten in a more popular style two years later as Natural History of Creation. Some of his more important monographs are: Radiolaria (1862), Siphonophora (1869), Monera (1870), Calcarious Sponges (1872), Arabian Corals (1876), another Radiolaria, enumerating several thousand new species, accompanied by one hundred and forty plates (1887), and Die Weltrathsel, trans, in 1900 as The Riddle of the Universe. Hahnemann, Wilhelm von. See vol. iv., p.

189.

Organon der rationellen Heilkunde, Dresden, 1810. Hall, Marshall, M.D., F.R.S.L. See vol. iv., p. 251.

On the Reflex Functions of the Medulla Oblongata and the Medulla Spinalis, in Phil. Trans, of Royal Society, vol. x.x.xiii., 1833. Hunter, John. See vol. iv., p. 92.

On the Digestion of the Stomach after Death, first edition, pp. 183-188.

Jenner, Edward. See vol. iv., p. 190.

An Inquiry into the Causes and Effects of the Variolo Vaccino, London, 1799.

Laennec, Rene Theophile Hyacinthe. See vol. iv., p. 201.