PINE n.
tle whose larvæ bore into pine trees. -- Pine finch. (Zoöl.) See Pinefinch, in the Vocabulary. -- Pine grosbeak (Zoöl.), a large grosbeak (Pinicola enucleator), which inhabits the northern parts of both hemispheres. The adult male is more or less tinged with red. -- Pine lizard (Zoöl.), a small, very active, mottled…
PNEUMOGASTRIC a.
one of the tenth pair of cranial nerves which are distributed to the pharynx, esophagus, larynx, lungs, heart, stomach, liver, and spleen, and, in fishes and many amphibia, to the branchial apparatus and also to the sides of the body.
POISON n.
-- Poison dogwood (Bot.), poison sumac. -- Poison fang (Zoöl.), one of the superior maxillary teeth of some species of serpents, which, besides having the cavity for the pulp, is either perforated or grooved by a longitudinal canal, at the lower end of which the duct of the poison gland terminates. See Illust. under F…
PUMICE n.
A very light porous volcanic scoria, usually of a gray color, the pores of which are capillary and parallel, giving it a fibrous structure. It is supposed to be produced by the disengagement of watery vapor without liquid or plastic lava. It is much used, esp. in the form of powder, for smoothing and polishing. Called…