Logan Republican | 1904-06-25 | Page 4 | Heating Power of Coal

Heating Power of Coal. The heating power of coal lo measured meas-ured by tho amount of carbon contained con-tained In a ton or a pound. Anthracite Anthra-cite coal is found In many countries, but It Is only In the United States and In Kngland that tho artlclo Is high grade 92 per cent or better. Even our coal differs widely In Its constitutional constitu-tional elements. One kind holds more ash than another. Still another variety va-riety holds more clinkers, In spite of repeated burnings. The best con I leaves no clinkers Bnd makes very little nsh.