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August 5, 1899, Vol XXXIII, No. 6 >
ARTICLE | August 5, 1899

Muscae Volitantes..

W. H. Peters, M.D.
JAMA. 1899;XXXIII(6):337. doi:10.1001/jama.1899.02450580031003.
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ABSTRACT

Lafayette, Ind., July 24, 1899.

To the Editor.  —I have been very much interested in the recent articles in the Journal on the seeing of the blood-corpuscles in one's own retina. So far as I am concerned it has not only never been a difficult matter for me to see them, but has been a very difficult matter in microscopic work to keep the field free from them. To see them best, it is well to prepare a slide with blood for comparison. Any good microscope stand with "B" eye-piece and 1/4-inch objective may be used. Focus the instrument on the slide, to get the idea of the size and appearance of the corpuscles, then draw the tube back by the coarse adjustment until the focus is lost, when the blood-corpuscles will be seen traveling across the field exactly like the corpuscles in the capillaries of the frog's foot in

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