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

The important work of Liebig and Wôhler appeared until 183a mostly in Poggendorff's Armalen, but after 1832 most of Liebig's work appeared in his own Annalen. About the earliest as well as one of his most important separate works is Anleitung zur Analyse organischen, Korper, 1837.

Lotze, Hermann. See vol. iv., p. 263.

Medizinische Psychologie, oder Physiologie der Seele, Leipzig, 1852.

Mohl, Hugo von. See vol. iv., p. 125.

Uber der Saftbewegung im Innern d. Zelle, Bot. Zei-tung, 1846. Morgagni, Giovanni Battista. See vol. iv., p. 76.

De sedibus et causis ntorborum, 2 vols., Venice, 1761.

Oken, Lorenz. See vol. iv., p. 160.

Philosophie der Natur, Zurich, 1802.

Pasteur, Louis. See vol. iv., pp. 217, 233.