Illustrations showing microscopic views of: crystals in flint (Fig. 1); crystals in urine (Fig. 2); demonstration of the composition of regular figures from globules (A-L). Schem. VII from Micrographia: or some physiological descriptions of minute bodies made by magnifying glasses with observations and Inquiries thereupon, by Robert Hooke (London, 1665).
Original: copperplate engraving. 1665
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