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"Tangential section of a larva of Astroides calicularis which has fixed itself on a piece of cork. ec, Ectoderm; en, endoderm; mg, mesogloea; m, m, mesenteries; s, septum; b, basal plate formed of ellipsoids of carbonate of lime secreted by the basal ectoderm; ep, epitheca." — The Encyclopedia Britannica, 1910

Astroides Calicularis

"Tangential section of a larva of Astroides calicularis which has fixed itself on a piece of cork. ec,…

"a, the osseous septum grooved for the passage of the cochlear nerve b, which terminates by a free end inside the chamber c, along the floor of which it lies for a short distance; d, d are the two layers of the membranous septum. Lying in contact with the end of the nerve is the enlarged extremity of a rod e, which is connected in a flail-like manner by the hinge f to another rod, which is fixed at g." — Chambers' Encyclopedia, 1875

Auditory Nerve

"a, the osseous septum grooved for the passage of the cochlear nerve b, which terminates by a free end…

"Waldheimia flavescens. Interior of dorsal valve. c, c', cardial process; b', hinge-plate; s, dental sockets; l, loop; q, crura; a, a', adductor impressions; c, accessory divaricator; b, peduncle muscles; ss, septum." — Encyclopedia Britanica, 1893

Dorsal Valve

"Waldheimia flavescens. Interior of dorsal valve. c, c', cardial process; b', hinge-plate; s, dental…

This illustration shows a representation of the circulation of the blood, in its essential features. The arrows indicate the course of the blood. a, arteries; aur., auricle or receiving portion of the heart; d, digestive tract; c. d., capillaries of the digestive tract; c.r., capillaries of the respiratory organs; c.s., capillaries of the system; va., valves; ve, veins; vt, ventricle.

Nephridium

This illustration shows a representation of the circulation of the blood, in its essential features.…

"Silique, the fruit of certain cruciferous plants, consisting of a pair of valves which seperate from a central septum"—Finley, 1917

Silique

"Silique, the fruit of certain cruciferous plants, consisting of a pair of valves which seperate from…

"Longitudinal section of valves. A, ventral, B, dorsal valves; l, loop; q, crura; ss, septum; c, cardinal process." — Encyclopedia Britanica, 1893

Valves

"Longitudinal section of valves. A, ventral, B, dorsal valves; l, loop; q, crura; ss, septum; c, cardinal…

The vomer is a single bone, situated vertically at the back part of the nasal fossae, forming part of the septum of the nose. It is thin, somewhat like a ploughshare in form; but varies in different individuals, being frequently bent to one of the other side; it presents for examination two surfaces and four borders.

Vomer

The vomer is a single bone, situated vertically at the back part of the nasal fossae, forming part of…