The following article has been written to promote the greater use of slide blood-smears in diagnosis by pointing out simple methods of making them. The average physician will not make cover-glass smears; he will go without smears first. They are too tedious and difficult to handle. To illustrate the simplicity of the method of making and staining slide smears, let me say that the physicians in the receiving ward of the Cook County Hospital, working two at a time, and diagnosing from 100 to 200 cases daily, find time to make, stain and examine blood-smears by this method to help in differentiating typhoid, malaria, and. miliary tuberculosis from occult (septic) pyogenic conditions, measles from scarlet fever, etc.
I wish, in the first place, to describe an excellent technic for making smears preparatory to staining them, which, though not original with me, I cannot find in