Page:Popular Science Monthly Volume 61.djvu/158

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POPULAR SCIENCE MONTHLY.


Fig. 13. Plumose Quinidine. 70 Diameters. Polarized Light. Fig. 16. Cinchonidine. 50 Diameters. Polarized Light.
Fig. 14. Platino-cyanide of Magnesia. 70 Diameters. Polarized Light. Fig. 17. Bichromate of Potash Crystals. 70 Diameters. Polarized Light.
Fig. 15. Crystal of CACO3 in India Rubber Plant, 120 Diameters. Fig. 18. Brucine Crystal. 70 Diameters. Polarized Light.
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