The paper funnel, Figure 9 , has the shape of the frustrum of a hollow cone. It fits into the inside of the neck of the metallic top and its smaller end, which is its lower part when inserted, passes down into the paper filler through the circular hole N, into which it fits snugly. It has a flange at the top which flares over the top of the neck of the cup. The patient carries the cup in the pocket. To use it he re¬ moves the metal cap and expectorates into the paper funnel, through Avhich the

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... putum passes down into the paper filler proper. When the cup is filled, or better, partly filled, the metal cap is removed, the paper funnel removed and burned, the top of the cup is then removed and the filler extracted and burned, and a neAv filler and funnel inserted.