Abstract
In order to overcome some of the difficulties of the gravity and the syringe methods and at the same time to retain the advantage of each, I have devised a simple and inexpensive apparatus for administering salvarsan intravenously. The principal parts of this new apparatus are shown in the accompanying diagram. In the figure, R represents a glass cylinder to receive the solution which is to be injected. To cylinder R is attached at the point r a piece of rubber tubing provided with a pinch-cock, P C . This constitutes the gravity part of the apparatus. The syringe portion of the apparatus is represented by S , which is the barrel of a glass syringe into which fits the piston P , consisting of a glass stem packed with heavy firm cord. The piston can readily be removed from the barrel so that the two parts can be easily and thoroughly cleaned.
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