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ch. -- Roman cement, a cement having the property of hardening under water; a species of hydraulic cement. -- Roman law. See under Law. -- Roman nose, a nose somewhat aquiline. -- Roman ocher, a deep, rich orange color, transparent and durable, used by artists. Ure. -- Roman order (Arch.), the composite order. See…

In a wider sense, a compound of saccharose, or any similar carbohydrate, with such bases as the oxides of calcium, barium, or lead; a sucrate.

rone; specifically, designating an unstable acid which is obtained from saccharone (a) by hydration, and forms a well-known series of salts.

A white crystalline substance obtained by dehydration of salicylic acid.

(Saxifragaceæ) of which saxifrage is the type. The order includes also the alum root, the hydrangeas, the mock orange, currants and gooseberries, and many other plants.

A carbohydrate of the glucose group found in the thickened endosperm of certain seeds, and extracted as yellow sirup having a sweetish-bitter taste.

A mucilaginous carbohydrate, resembling achroödextrin, extracted from squill as a colorless amorphous substance; -- so called because it is levorotatory.

d siphon, a tube bent like a siphon, but having the branches turned upward; specifically (Hydraulic Engineering), a pipe for conducting water beneath a depressed place, as from one hill to another across an intervening valley, following the depression of the ground. -- Siphon barometer. See under Barometer. -- Siphon…

sorption of carton dioxide and water, by which it is converted into carbonate of lime and hydrate of lime.

The pulverized matter from a quartz mill, or the lighter soil of hydraulic mines. [Local, U. S.]

lid, NaOH, having a fibrous structure, produced by the action of quicklime, or of calcium hydrate (milk of lime), on sodium carbonate. It is a strong alkali, and is used in the manufacture of soap, in making wood pulp for paper, etc. Called also sodium hydrate, and caustic soda. By extension, a solution of sodium hydro…

own as a catharic under the name of Glauber's salt, which term is properly applied to the hydrate, Na2SO4.10H2O.

wholly soluble. U. S. Disp. Fehling's solution (Chem.), a standardized solution of cupric hydrate in sodium potassium tartrate, used as a means of determining the reducing power of certain sugars and sirups by the amount of red cuprous oxide thrown down. -- Heavy solution (Min.), a liquid of high density, as a solutio…

A vertical pipe, open at the top, between a hydrant and a reservoir, to equalize the flow of water; also, a large vertical pipe, near a pumping engine, into which water is forced up, so as to give it sufficient head to rise to the required level at a distance.

to it, etc. -- Stop plank, one of a set of planks employed to form a sort of dam in some hydraulic works. -- Stop valve, a valve that can be closed or opened at will, as by hand, for preventing or regulating flow, as of a liquid in a pipe; -- in distinction from a valve which is operated by the action of the fluid it…

A compound of sucrose (or of some related carbohydrate) with some base, after the analogy of a salt; as, sodium sucrate.

hissing noise and the production of heat, forming sulphuric acid, and is employed as a dehydrating agent. Called also sulphuric anhydride, and formerly sulphuric acid. -- Sulphur whale. (Zoöl.) See Sulphur-bottom. -- Vegetable sulphur (Bot.), lycopodium powder. See under Lycopodium.

hydrochloric and nitric acids, of soda, of bleaching powders, etc. It is also powerful dehydrating agent, having a strong affinity for water, and eating and corroding paper, wood, clothing, etc. It is thus used in the manufacture of ether, of imitation parchment, and of nitroglycerin. It is also used in etching iron,…

An artificial dyestuff obtained as an orange-yellow powder, and regarded as a phenyl hydrazine derivative of tartaric and sulphonic acids.

A hydraulic device by which the movement of the wheel on the bridge operates the steering gear at the stern.