PLANT n.
A vegetable; an organized living being, generally without feeling and voluntary motion, and having, when complete, a root, stem, and leaves, though consisting sometimes only of a single leafy expansion, or a series of cellules, or even a single cellule.
POND n.
r lily. See under Water, and Illust. under Nymphæa. -- Pond snail (Zoöl.), any gastropod living in fresh-water ponds or lakes. The most common kinds are air-breathing snails (Pulmonifera) belonging to Limnæa, Physa, Planorbis, and allied genera. The operculated species are pectinibranchs, belonging to Melantho, Valvat…
PROTECTIVE a.
tective coloring (Zoöl.), coloring which serves for the concealment and preservation of a living organism. Cf. Mimicry. Wallace. -- Protective tariff (Polit. Econ.), a tariff designed to secure protection (see Protection, 4.), as distinguished from a tariff designed to raise revenue. See Tariff, and Protection, 4.…