โ Scribed by W.E. Burge
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๐ SIMILAR VOLUMES
Electrolytic Oxygen in Cyanide Solutions. T.H. ALDRICH, JR. (Amer. Inst. Mining Eng., Bull. lxii, p. I77.)--Experiments made in the laboratory and on the manufacturing scale with 25,000 tons of ore in the factory prove that the extraction of gold and silver is much more complete, especially when sul
## 694 CURRENT TOPICS. [J. F. I. high over the earth and in the west toward, the sun, was in the sunshine. This was verified by calculation. Subsequent comparison of other unusually high auroras showed that they also had been exposed to sunlight. Rays with their lower edges 300 to 40o kin. above
oxygen liberated in ten minutes was determined. Ten such determinations were made with an average of I i8 C.C. of oxygen for the determinations. The smallest amount obtained in these determinations was i I2 c.c. of oxygen, the largest amount i26 c.c. Similarly, 3 ยฐ milligrammes of a moth were introd