The book Hidden Beauties of Nature was written by author Richard Kerr Here you can read free online of Hidden Beauties of Nature book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Hidden Beauties of Nature a good or bad book?
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To view them in this manner it is best to place a black disc of paper on the underneath side of the glass slip, thus shutting out any light below. Some mounters prefer to arrange them without any disc underneath, and to treat them as transparent FOSSIL POLYCYSTINA 83 objects by throwing a light through them from below. Others mount them in fluid glycerine, so that they are free to move about. Viewed transparently, as in this last method, when the polycystina roll down they appear to take the op...posite direction, and the effect is charming. They roll over and over, and display every portion of their symmetrical outlines, many of them showing the inner concentric perforated balls which resemble the ivory ones to which we have referred. The pattern is not, however, limited to the ball series, for we find cups, and helmets, and bowls, and mitres, in endless succession. Whether it be viewed under the microscope, or in a greatly enlarged form, as on the lantern screen, a slide of polycystina always creates profound admiration.
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