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Scientific American, Vol. 65, No. 1 (July 1891) (1891)

leaf 5

An illustration from Scientific American, Vol. 65, No. 1 (July 1891), 1891, leaf 5
- tities as not to be commercially valuable. The writer, BY GEO. M. HOPKINS. pliances shown in Fig. 2, consisting of six dry plates, a who has made an examination of the different uranium An object which always interests the microscopist, package of blue process paper, one ounce of hyposul- ores on… … (Fe, Ca) O SO3, HaO, in large bodies of kidney-shaped Fig. l.-FISH TROUGH WITH GRIDS AND CONTINUOUSJS form ; and mounts, a printing frame, two japanned trays, to- WATER SUPPLY. 4. Trogerit, 3 UO3, -As, 0„. gether with a sheet of ruby paper for making a red light for the dark room. With these the…

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