Perimeter, the outer boundary of a body.
Phalanges, the small bones of the fingers and toes.
Philologist, one versed in the laws of human speech.
Pliocene, a term applied to the most recent tertiary deposits.
Post-Tertiary, the second period of the age of mammals.
Prototype, a model after which anything is to be copied.
Quadrangular, having four angles, and consequently four sides.
Quadrumana, an order of animals whose fore feet correspond to the hands of man.
Quartz, a stone of great hardness, with a glassy lustre, and varying in color from white, or colorless, to black.
Quartzite, granular quartz.