Lignite
2 of the 7 encyclopedias on this shelf carry an entry for Lignite. Both are reproduced below, so you can see where they agree and where they differ.
Collier's New Encyclopedia (1921)
fossil emitted by a large spark darting from clouds charged coal. It is usually with electricity. In the black, and has lower regions of the atmosphere it is of Carboniferous white, in the upper one somewhat violet, pitch black. As the as is the spark of an electrical machine In the upper regions of implies, it, as a and aspect of the in a vacuum. the sky, where the air is rarefied, it tains a larger tends to take the form of sheet-lightning, sometimes called than wood does. heat lightning; in the on, it discharges lower regions it becomes more concenand becomes trated and moves in lines. As a rule bituminous coal. lightning strikes objects from above, though occasionally ascending lightning LIGNUM has been seen. When it sinks deeply into Guaiacum officinale the ground it sometimes vitrifies the and heavy wood, LIGNUM VITÆ fulguritos. Light fulgurites. Light eed that a flash is speed that a flash is urs. Thunder, it occurs. Thunder, noise of the explothe noise of the exploonda to travel a five seconds to travel a of any flash, distance of any flash, be calculated. , may be calculated. danger is but , the danger is but RESTER, & con- ARRESTER, raphy for guarding a contelegraphy for guarding atmospheric elecof atmospheric elecinstruments. The the instruments. The hed to a plate of attached to a plate of on the under side. serrated on the under side. nother plate conon another plate conhd, the two being ground, the two being ayer of insulating thin layer of insulating UCTOR, an appli- CONDUCTOR, an appliet a building and protect a building and struction or damdestruction or damwas invented by . It was invented by 1756. In general in 1755. In general Ally from the roof vertically from the roof it is designed to which it is designed to From 6 to 10 feet, is from 6 to 10 feet, se two or three the base two or three atinum or gilded is of platinum or gilded uns a wire cord, rod runs a wire cord, ip of copper, to , or strip of copper, to in general in terminating in general in feet below the to 21 feet below the In a well. Gencases in a well. Gena large number favors a large number ts, and heid off points, and held off ans of supports. by means of supports. GHTBOAT, a
Aiton's Encyclopedia (1910)
. See Coal