lectricity and the Mechanical Value
of Heat, in Report of the British Association for the Advancement of
Science, 1843, vol. xii" p. 33-

Kirwan, R. See vol. iv., p. 3 ff.

An Essay on Phlogiston and the Constitution of Acids, London, 1789.
This is interesting, written as it was just before Lavoisier's Elements
treated the same subject from the stand-point of the anti-phlogistic
chemists.

Kleist, Dean von. See vol. ii., p. 280.

In the Danzick Memoirs, vol. i. contains the description given by Von
Kleist of his discovery of the Leyden jar. A translation is given also
in Priestley's History of Electricity.

Lavoisier, Antoine Laurent. See vol. iv., p. 33.

Traite elementaire de chimie, Paris, 1774, trans, as Elements of
Chemistry, by Robert Kerr, London and Edinburgh, 1790. Lister, Joseph
Jackson. See vol. iv., p. 113.

On Some Properties in Achromatic Object Glasses Applicable to the
Improvement of the Microscope, in Phil. Trans, for 1830.

Maxwell, James Clerk-. See vol. iii., p. 45.

" On the Motions and Collisions of Perfectly Elastic Spheres " in
Philosophical Magazine for January and July, i860. The Scientific Papers
of J. Clerk-Maxwell, edited by W. D. Nevin (2 vols.), vol. i., pp.
372-374, Cambridge, 1896. This is a reprint of Maxwell's prize paper of
1859. Mayer, Dr. Julius Robert. See vol. iii., p. 259.

The Forces of Inorganic Nature, 1842. This is Mayer's statement of the
conservation of energy. Mendeleepp, Dmitri Ivanovitch. See vol. iv., p.
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.,
clxxxvi., 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