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In my view, the Christian religion is the most important and one of the first things in which all children, under a free government ought to be instructed... No truth is more evident to my mind than that the Christian religion must be the basis of any government intended to secure the rights and privileges of a free people. Preface to 1828 Dictionary
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TO'PAZ, n. [Gr.] A mineral, said to be so called from Topazos, a small isle in the Arabic gulf, where the Romans obtained a stone which they called by this name, but which is the chrysolite of the moderns. The topaz is of a yellowish color. It sometimes occurs in masses, but more generally crystallized in rectangular octahedrons. Topaz is valued as a gem or precious stone, and is used in jewelry. It consists of silex, fluoric acid and alumin, in the following proportions; alumin 57 parts, silex 34, and fluoric acid 7 or 8.
Of topaz there are three subspecies, common topaz, shorlite and physalite.
A mineral occurring in
rhombic prisms, generally yellowish and pellucid, also colorless, and of
greenesh, bluish, or brownish shades. It sometimes occurs massive and
opaque. It is a fluosilicate of alumina, and is used as a gem.
Either one of two species of
large, brilliantly colored humming birds of the Topaza, of South
America and the West Indies.
* The two tail feathers next to the central ones are much longer that the rest, curved, and crossed. The Throat is metallic yellowish-green, with a tint like topaz in the center, the belly is bright crimson, the back bright red. Called also topaz hummer. False topaz. (Min.) See the Note under Quartz. | ||||||||