, 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 Institute 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. xxxiii., 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.

Traite d'auscultation mediate, Paris, 1819. Lamarck, Jean Baptiste de.
See vol. iv., p. 152.

Philosophie zoologique, 8 vols., Paris, 1801. His famous statement of
the supposed origin of species occurs on p. 235 of vol. i., as follows:
"Everything which nature has caused individuals to acquire or lose by
the influence of the circumstance to which their race is long exposed,
and consequently by the influence of the predominant employment of such
organ, or its constant disuse, she preserves by generation to the new
individuals proceeding from them, provided that the changes are
common to the two sexes, or to those which have produced these new
individuals."

Libbig, Justin. See vol. iv., p. 131.

Animal Chemistry, London, 1843.

Libbig and Wohler. See vol. iv., p. 56.

The important work of Liebig and Wohler appeared until 183a mostly in
Poggendorff's Armalen, but after 1832 most of Liebig's work appeared in
his own Annalen. About the ea