OCR Text |
Show Marble Made With Electricity. The latest achievement of science is the artificial production of marble from pure calcium carbonate. M. H. le Chatalier, a French chemist, takes the calcium in the form of an impalpable im-palpable powder and compresses it in a steel cylinder between two pistons with a pressure of 2,000 pounds to the square inch. While in this condition a platinum spiral, previously imbedded in the powder, pow-der, is heated by an electric current, with the result that the powder in the neighborhood of the wire is rendered crystalline and translucent. Sections of the resulting substance when examined underneath a microscope exhibited the characteristics of certain specimens of slightly macled marble. This remarkable work of the electric current may prove the stepping stone to greater achievements in the production of artificial stono of all kinds. |