GENERATOR, an apparatus for gen erating carbonic acid gas for charging soda-fountains, or bottles with aerated water. In chemistry, a term used to de note the elements or compounds from which a more complex substance is ob tained. Thus ethyl, alcohol, and acetic acid are the generators of acetic ether; and benzoic acid and glycocoll are the generators of hippuric acid. By the ac tion of acids or alkalies these substances can be resolved into their generators, and, so the constitution of a complex body can be determined; thus, Lecithin, a constituent of the brain, has the for mula C.H.N.R .0,; it has six generators, glycerin, phosphoric acid, stearic acid, glycol, methyl alcohol, and ammonia; therefore it is found to be a distearate glycerophosphate of choline, and choline has been found to be a trimethyl oxy ethyl ammonium hydrate (CH.)3N•CHI *OH •CIL •OH. In distilling, a retort in which volatile hydrocarbons are distilled from liquid or solid matters.
In electricity, a DYNAMO-ELECTRIC MA CHINE (q. v.) In music, a ground note, fundamental bass, root, derivative. The principal sound or sounds by which others are produced, as the lower C for the treble of the harpsichord, which be side its octave will strike an attentive ear with its twelfth above or G in alt, and with its fifteenth above or C in alt. In steam, a vessel in which steam is gener ated from water, for use in a steam en gine, a heating apparatus, etc. The term was first applied to the Perkins steam boiler, in which water in small quantity was heated to a high temperature. It is now specifically applied to a class of instantaneous generators. The name is now rapidly coming into use for all apparatus for generating steam, being held to be more correct than the usual term.