Abstract
1. The practitioner is sometimes in need of an immediate white count when at the bedside and far from a microscope. Here is a quick, satisfactory and easy method by which it can be done in the patient's room and the result will be the same as if the counting were done through a regular microscope. Procedure.— Draw the blood into a pipette, dilute with acetic acid and place a drop in the Zeiss counting chamber in the usual way. Now hold the cover slip on the counting chamber with a rubber band. The chamber can then be held up to the light and the corpuscles will not slide across the field. The counting is done with a small pocket hand lens. A sixty-cent lens will do, but there are more powerful lenses on the market that are hardly larger than a pea and are even better. A single frosted
Published Version
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