LACTIC a.
inactive. -- Lactic ferment, an organized ferment (Bacterium lacticum or lactis), which produces lactic fermentation, decomposing the sugar of milk into carbonic and lactic acids, the latter, of which renders the milk sour, and precipitates the casein, thus giving rise to the so- called spontaneous coagulation of mil…
LAMARCKISM n.
The theory that structural variations, characteristic of species and genera, are produced in animals and plants by the direct influence of physical environments, and esp., in the case of animals, by effort, or by use or disuse of certain organs.
LANCEWOOD n.
ed for the shafts of gigs, archery bows, fishing rods, and the like. Also, the tree which produces this wood, Duguetia Quitarensis (a native of Guiana and Cuba), and several other trees of the same family (Anonaseæ). Australian lancewood, a myrtaceous tree (Backhousia Australis).
LARYNX n.
r trachea, connected with the hyoid bone or cartilage. It contains the vocal cords, which produce the voice by their vibrations, when they are stretched and a current of air passes between them. The larynx is connected with the pharynx by an opening, the glottis, which, in mammals, is protected by a lidlike epiglottis.…