boghead coal

American  

[bog-hed] / ˈbɒgˌhɛd /

noun

1. compact bituminous coal that burns brightly and yields large quantities of tar and oil upon distillation.

---

Etymology

Origin of boghead coal

First recorded in 1935–40; named after Boghead, Scotland

Example Sentences

The same observer considers Boghead coal, kerosene shale and similar substances used for the production of mineral oils to be mainly alteration products of gelatinous fresh water algae, which by a nearly complete elimination of oxygen have been changed to substances approximating in composition to C2H3 and C3H5, where C : H = 7.98 and C : O + N = 46.3.

From Project Gutenberg

Knowledge, 4-134: That, according to M. Daubrée, the substance that had fallen in the Argentine Republic, "resembled certain kinds of lignite and boghead coal."

From Project Gutenberg

In the beginning of 1850, Mr. Bartholomew, of the City and Suburban Gas Works, Glasgow, showed Mr. Young some specimens of the Boghead coal, with which he renewed his experiments, distilling the mineral at a low temperature, until he evolved a considerable quantity of crude paraffin.

From Project Gutenberg

Boghead coal, also known as "Torebanehill mineral," gives Boghead naphtha, while the crude naphtha obtained from shales is often quoted as shale-oil.

From Project Gutenberg