The Condensation Of Zinc From Its Vapor - Discussion (b3262072-ef40-4264-a4ce-6be3ee061b2d)

CHARLES H. FULTON (author's reply to discussion*).-Mr. E. E. Thum is kind enough to point out an apparent discrepancy between the conclusions drawn from experiments and the results of those experiments. It is stated on page 1383 that carbon dioxide in excess of 1 per cent. is not found in the gases above the carbon reduction temperature (of zinc oxide). This statement refers to such temperatures as occur in ordinary zinc distillation and is not meant to include temperatures above 1350° C., and it should have been so stated in the original paper. When the temperature of the distilling chamber reached 1400° and above, it was noted that the amount of carbon dioxide in the gases increased. This cannot be explained by the equilibrium of the reaction 2CO?CO2 + C, and in seeking reasons for the discrepancy, the experiments of Meyer