No coin nor oath required. For personal study only.
since the contraction induced by formalin separates the gelatin from the glass. Much more quinone and sodium-quinonesulphonate can be used than formalin without decreasing the fluidity of the resulting gelatin solutions.
Uranium Ore in Mexico. (L'Ind. Chimica, x,27o.)--Mr. W.
Niven discovered ,a new mineral in the Guerrero district of Mexico which was a hydrophosphate of uranium and copper. This mineral, which is called torbernite has a slight action on a photographic plate in the dark. Experiments are being made to ascertain the suitability of the mineral as a raw material for the manufacture of radium salts.
π SIMILAR VOLUMES
The basic open hearth furnace, the world's greatest steel producer at present, suffers under the disadvantage of greater cost of operation than the Bessemer converter, due chiefly to costs for fuel, labor and repairs. Constant experiments are being made at steel works to reduce these expenses, and t