These 12 listings are so strange that each appears in only one of the 7 encyclopedias we compared. They include such classics as Thallene, Thallium, Thallium.
isomeric with anthracene obtained from the last products which pass over in the distillation of American petroleum. It is distinguished by a green fluorescence, and, when illuminated by violet and ulfluorescent tra-violet light, exhibits a spectrum containing light-green bands.
Only in Collier's New Encyclopedia
a metallic element akin to lead and zinc. It was discovered in 1861 by Sir William Crookes in the lead chambers of sulphuric acid works in the Harz Mountains. He detected its presence by a brilliant green line shown in the spectroscope. The name is Greek, signifying a green twig. Before dross is formed on the surface, thallium presents a silvery white luster. It is softer than lead and, like it, is malleable. It melts readily. Its chief use in the arts is in the making of glass. A trace of thallium in the lens of a microscope increases its magnifying power. Thallium is also used to add luster in the manufacture of glass jewelry.
Only in Aiton's Encyclopedia
in chemistry, a triad metallic element discovered by Crookes in 1861, and widely distributed as a constituent in iron and copper pyrites in blende, native sulphur, and in many kinds of ores; symbol Tl., at. wt. 203.64. It can be distilled with the sulphur by heating pyrites to a bright-red heat, then dissolving out the excess of sulphur by boiling with caustic soda, collecting and washing the sulphide of thallium, converting it into sulphate, and precipitating the thallium in the metallic state by the action of pure metallic zinc. The Biskra. Here are in the solitude extenspongy metal is compressed, dried, and fused into a bright metallic button by heating under cyanide of potassium. It is a perfect metal, with high luster, not quite so white as silver, but free from the blue tinge of lead. It has a sp. gr. of 11.80-11.91, melts at 293°, is a very soft metal with less tenacity than lead, and almost devoid of elasticity. It communicates an intense green hue to a colorless flame, and its spectrum consists of one intensely brilliant and sharp green line, coinciding with the number 1442.6 on Kirchhoff's chart.
Only in Collier's New Encyclopedia
2026 Editor's Note: This page uses language about other peoples, religions, or nationalities that was commonplace when the book was published and is offensive by today's standards. The text has been left exactly as it was printed, rather than cut or softened, so that the historical record — including how ordinary such language once was — is preserved. (Ed: ET 2026-07-22) "the Numidian Pompeii," near the Aures Mountains, in Algeria; 22 miles from Batna, which is half-way by rail from Constantine to sive remains of colonnades, temples, a forum, a triumphal arch in honor of the Emperor Trajan (founder of the city), and numerous statues and inscriptions coming down to the 5th century, when the Roman city was destroyed by the barbarians.
Only in Collier's New Encyclopedia
a title of honor or dignity among the Anglo-Saxons. In England a freeman not noble was raised to the dignity of a thane by acquiring a certain amount of land (five hides in the case of a lesser thane), by making three sea voyages, or by receiving holy orders. The thanes had the right of voting in the Witenagemot, not only of their own shires, but also of the whole kingdom, on important questions. There were two orders of thanes: The king's thanes, or those who attended at his court and held lands immediately from him, and ordinary thanes, or lords of the manor, and who had a particular jurisdiction within their limits. On the cessation of his actual personal service about the king, the thane received a grant of land. After the Norman conquest, thanes and barons were classed together, and the title fell into disuse in the reign of Henry II. In Scotland, thane signified originally a count or earl, one who ruled a county, or even in some cases a province. Afterward the title was applied to a class of non-military tenants of the crown, and continued in use till the end of the 15th century.
Only in Collier's New Encyclopedia
Octave, the pen name of Alice French.
Only in Aiton's Encyclopedia
OCTAVE, pseudonym of ALICE FRENCH, an American novelist; born in Andover, Mass., March 19, 1850. She published: "Knitters in the Sun"; "Otto the Knight"; "Stories of a Western Town"; "An Adventure in Photography"; "Expiation"; "The Heart of Toil"; "A Slave to Duty."
Only in Collier's New Encyclopedia
ISLE OF, a district of England, in the county of Kent, at the mouth of the Thames; separated from the mainland by the Stour river on the S. and the Nethergong on the W., with an area of 26,500 acres. On its shores are the wellknown watering places Ramsgate, Margate, and Broadstairs; and on the North Foreland, in the N. E., is a lighthouse, 85 feet high, visible 19 miles. Pop. about 72,500.
Only in Collier's New Encyclopedia
a town of Upper Alsace, Germany; on the Thur river; 23 miles S. W. of Kolmar. It dates back to 995 and in 1325 became the property of the House of Hapsburg. In 1632 it was captured by the Swedes (during the Thirty Years' War) and in 1675 the French under Turenne blew up the castle of Engelburg, the ruins of which overlook the town. Thann has manufactures of silk, cotton, chemicals, and machinery, and contains the beautiful church of St. Theobald (Roman Catholic) with a spire of delicate openwork 325 feet high.
Only in Collier's New Encyclopedia
the deadly carrot; the typical genus of Thapsidæ. Perennial herbs with doubly or trebly pinnate leaves, and large compound umbels of yellow flowers without involucres or involucels. T. garganica is found in the S. of Europe and Northern Africa; T. silphion is a variety of it rather than a distinct species. Thapsia is a powerful rubefacient, and is used in medicine in the form of a sparadrap.
Only in Collier's New Encyclopedia
the ancient Thasos, an island in the Ægean sea, a few miles S. of the Macedonian coast, belonging to Turkey. It is of a circular form, about 16 miles in diameter, and is traversed by high woody hills which yield large quantities of timber.
Only in Collier's New Encyclopedia
straw, or any other dry vegetable substance, laid on the top of a building, rick, etc., to keep out the wet. There are many different materials for thatching, but the straw of wheat and rye when well laid form the neatest and most secure covering for general purposes. The reed, though expensive, is a highly valuable article for the purpose of thatch, where a lasting roof is required.
Only in Collier's New Encyclopedia