Chemistry in Industry - American Chemical Society

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account of the great chemical reactivity of fused iron oxide it cannot be melted in any crucible so far developed. Many refractory materials have been investigated for this purpose, but all have been found to contaminate the molten oxide. The method finally adopted consists in fusing the oxide in a protecting bed of the same material. The electrical conductivity of the oxide is sufficiently great so that the material may be melted between water-cooled iron electrodes. Promoters are readily added to the iron oxide in this method of fusion, and all those substances which are known to react unfavorably can be carefully excluded.-Pixed Nitrogen Research Laboratory, Washington, D. C.

ERRATA Val. 2. No. 9. n. 733, first . ~ a r a. n a ~ h . - T h efifth sentence should read as follows: "Of what use is our research, our study of technical trivialities, while souls are scorching. athirst for the sustenance which real knowledge can give?' p. 735, next t o last paragraph.-"It t o be useless.

. . ."

is useless to insist.

. . ." should be, "It

seems

No. 11, p. 1066.-TheLatin quotation should read: Usus DecimlJium numeforum. Mensurw & fiondcra diuidantur i n 10, perks ocguaks, b sing& decimae rursum in d i a s aequeles 10, quae i5n efunt ce?&simae lolizrs: A&ue herum singuhe ierum i n 10, quae firoinde iam erunt nillesimae totius.

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