As described on accompanying pages listed next to the illustrations, this plate illustrates various substances under magnification. Includes vinegar salts (figure I), salt after adding vinegar to crab eyes (figure II), sugar (figure III), green vitriol (figure IV), alum (figure V), water crystals from a salt spring (figure VI), saltpeter (figure VII), crushed limestone (figure VIII), vitriol (figure IX), as well as crystals from salt springs (figures X and XI).
This plate comes from The Microscope Made Easy by Henry Baker (1698-1774), a book that popularized the microscope in the 18th century. The first section describes simple and compound microscopes along with how to prepare specimens and calculate their size. The second section introduces the reader to microscopy and the laboratory manual. Also includes "Animalcules," or microscopic animals, and anatomical discoveries made with the microscope.
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