Ferro-cerium and other pyrophoric alloys
- Publisher
- Elsevier Science
- Year
- 1917
- Tongue
- English
- Weight
- 68 KB
- Volume
- 183
- Category
- Article
- ISSN
- 0016-0032
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β¦ Synopsis
March, I917.]
CURRENT TOPICS. 369 hole about a quarter of an inch in diameter, we can see the subject through it from any part of the plate area. In this way we practically turn the camera into a finder of the frame type, and this is all tl~at is necessary, actual focussing being neither required nor possible.
Ferro-cerium and Other Pyrophoric Alloys. C.R. ]~OHM.
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## I2I 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 discov