Triumphs and Wonders of the 19th Century: The True Mirror of a Phenomenal Era / A volume of original, entertaining and instructive historic and descriptive writings, showing the many and marvellous achievements which distinguish an hundred years of material, intellectual, social and moral progress

by James P. Boyd

VI. METALLURGICAL CHEMISTRY.

This is the oldest branch of chemical science, and naturally the one which was furthest advanced at the beginning of the century. Nevertheless, the advances which the past one hundred years have seen in this science are most surprising. Gold and silver are now secured from ores so poor as to have rendered them of no value a hundred years ago. The Bessemer process of steel making (1856) has revolutionized the world, and made possible railroads and steamships. The basic Bessemer process of making steel from pig-iron rich in phosphorus, has opened up rich mines of iron ore hitherto valueless. The basic phosphatic slag, resulting from this process, is of the highest value in the fields, and has brought agriculture and metallurgy into intimate relationship. The electric furnace has made aluminium almost as cheap as iron, bulk for bulk, and electric welding bids fair to take the place of the old process, with the cheapening of metals.