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tics), a curve to which the ray of light, reflected or refracted by another curve, are tangents, the reflecting or refracting curve and the luminous point being in one plane. -- Caustic lime. See under Lime. -- Caustic potash, Caustic soda (Chem.), the solid hydroxides potash, KOH, and soda, NaOH, or solutions of the…

The iron of other agent in cauterizing. Actual cautery, a substance or agent (as a hot iron) which cauterizes or sears by actual heat; or the burning so effected. -- Potential cautery, a substance which cauterizes by chemical action; as, lunar caustic; also, the cauterizing produced by such substance.…

enne pepper. (a) (Bot.) A species of capsicum (C. frutescens) with small and intensely pungent fruit. (b) A very pungent spice made by drying and grinding the fruits or seeds of several species of the genus Capsicum, esp. C. annuum and C. Frutescens; -- Called also red pepper. It is used chiefly as a condiment.…

A gentianaceous plant not fully identified. The name is usually given to the Erytheræa Centaurium and the Chlora perfoliata of Europe, but is also extended to the whole genus Sabbatia, and even to the unrelated Centaurea.

stminster, and for the House of Lords during the session of Parliament. Under him are the gentleman of the black rod and other officers. His office is distinct from that of the lord chamberlain of the Household, whose functions relate to the royal housekeeping.

A supposed material or psychical agent or mode of activity other than a force, law, or purpose; fortune; fate; -- in this sense often personifed. It is strictly and philosophically true in nature and reason that there is no such thing as chance or accident; it being evident that these words do not signify anything real…

ried under the arm without injury. Such hats were particularly worn on dress occasions by gentlemen in the 18th century. A chapeau bras is now worn in the United States army by general and staff officers.

, a fine charcoal prepared by calcining bones in a closed vessel; -- used as a filtering agent in sugar refining, and as an absorbent and disinfectant. -- Charcoal blacks, the black pigment, consisting of burnt ivory, bone, cock, peach stones, and other substances. -- Charcoal drawing (Fine Arts), a drawing made with…

to urge earnestly; as, to charge a jury; to charge the clergy of a diocese; to charge an agent. Moses . . . charged you to love the Lord your God. Josh. xxii. 5. Cromwell, I charge thee, fing away ambition. Shak.

A manor house or residence of the lord of the manor; a gentleman's country seat; also, particularly, a royal residence; as, the chateau of the Louvre; the chateau of the Luxembourg.

A substance used for producing a chemical effect; a reagent.

o the decomposition of organic substance into more simple bodies, by the use of chemical agents alone. Thudichum.

To treat with tenderness and affection; to nurture with care; to protect and aid. We were gentle among you, even as a nurse cherisheth her children. 1 Thess. ii. 7.

valued for its timber; P. Virginiana (choke cherry), an American shrub which bears astringent fruit; P. avium and P. Padus, European trees (bird cherry).

Sea. Chian earth, a dense, compact kind of earth, from Chios, used anciently as an astringent and a cosmetic. -- Chian turpentine, a fragrant, almost transparent turpentine, obtained from the Pistacia Terebinthus.

, or family; a person in authority who directs the work of others; the pricipal actio or agent.

A plant (Agathotes Chirayta) found in Northern India, having medicinal properties to the gentian, and esteemed as a tonic and febrifuge.

A colorless oily liquid, CCl3.CHO, of a pungent odor and harsh taste, obtained by the action of chlorine upon ordinary or ethyl alcohol.

ortant compound being common salt. It is powerful oxidizing, bleaching, and disinfecting agent. Symbol Cl. Atomic weight, 35.4. Chlorine family, the elements fluorine, chlorine, bromine, and iodine, called the halogens, and classed together from their common peculiariries.

A heavy, colorless liquid, CCl3.NO2, of a strong pungent odor, obtained by subjecting picric acid to the action of chlorine. [Written also chloropikrin.]