"An animal of one of the lower orders. It fastens itself to some floating object and becomes glued to it by a secretion of cement, and develops a valved shell."

Barnacle

"An animal of one of the lower orders. It fastens itself to some floating object and becomes glued to…

A brick-making machine.

Brick-maker

A brick-making machine.

Section of a portion of the dentine and cement from the middle of the root of an incisor tooth. Labels: a, dental tubuli ramifying and terminating, some of them in the interglobular spaces b and c, which somewhat resemble bone lacunae; d, inner layer of the cement with numerous closely set canaliculi; e, outer later of cement; f, lacunae; g, canaliculi.

Dentine and Cement

Section of a portion of the dentine and cement from the middle of the root of an incisor tooth. Labels:…

"Lapidary's Dial. A, section; B, side elevation; a, a, jaws; b, ball; c, tube; d, dial; e, cement rod; f, index; g, quadrant." —The Encyclopedia Britannica, 1910

Lapidary's dial

"Lapidary's Dial. A, section; B, side elevation; a, a, jaws; b, ball; c, tube; d, dial; e, cement rod;…

Structure of the teeth. A tooth consists of 3 structures, the dentine (2), or ivory, the proper dental substance, forming the larger portion; the enamel or adamant (3), a layer covering the crown; and the cement (1), a thin layer on the surface of the fang. A central chamber, the pulp-cavity, occupies the interior, and contains the pulp, a soft, vascular, and sensitive organ, surrounded by a layer of cells, the odonto-blasts, or dentine-forming cells.

Structure of the Teeth

Structure of the teeth. A tooth consists of 3 structures, the dentine (2), or ivory, the proper dental…

"<em>A</em>, enamel; <em>B</em>, pulp cavity; <em>C</em> dentine; <em>D</em>, cement." &mdash; Blaisedell, 1904

Longitudinal section of a tooth

"A, enamel; B, pulp cavity; C dentine; D, cement." — Blaisedell,…

"For two-course floors and pavements, a concrete base of about four inches thick, mixed 1:3:5 (that is, one sack of cement, 3 cubic feet of sand, and 5 cubic feet of gravel), is first placed in the forms."&mdash;The Federal Digest, 1921

Two-Course Work

"For two-course floors and pavements, a concrete base of about four inches thick, mixed 1:3:5 (that…