—, — — —, rocks accompanying, vii, 260.
—, —, remarks on the properties and economical uses of anthracite, B. Silliman, x, 331;
–characters, 332;
experiments on, 333;
uses of, in the arts, 337;
mode of burning, 338, 341;
comparative value of Lehigh and Schuylkill, 339;
price in New York, 340;
general qualities of, 343;
documents relating to the value of, 346.