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used under this lens. It may be 16 in. long, 4 in. high, and 4 or 5 in. broad.
Various kinds of dissecting microscopes are on the market, and these are to be recommended when they can be afforded.
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A.—Improvised Stand for Lens.
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B.—Dissecting Needle 1/2 natural size.
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C.—Dissecting Glass.
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D.—Dissecting Stand.
Instructions for the use of the compound microscope, with
which some schools may be equipped, cannot be given in a brief
space; the technique requires careful training. Such microscopes
are not needed unless the pupil studies cells and tissues.
