================================================================== Preparation Reactions Number of ┌────────────┴────────────┐ Injections Severe Mild None Undetermined 1 13 14 4 8 39 2 5 15 16 5 41 3 7 25 3 2 37 --- 117 ------------------------------------------------------------------ The solutions are understood to contain a 1 per cent. solution of red mercuric iodid in oil, two of them containing in addition 2.5 per cent. of guaiacol, one of these being a proprietary preparation. The solutions are designated as Preparations 1, 2 and 3, respectively, corresponding to the numbers on the labels of the bottles in which they were originally received. The local reactions are recorded as “severe” (S), “mild” (M), “none” (O) and “Undetermined” (U). By “severe” is meant very severe pain lasting for from several hours to several days; by “mild” is meant slight pain or numbness for several hours, or less than an hour; “none” indicates that there was no local reaction, and “undetermined,” that the patient has failed to return after the last injection. In Table 3 all the details of the investigation are recorded. Under “Local Reaction,” the letters represent the type of reaction after each injection, in the order in which they were given; when two solutions were used in the same case, the letters represent the reactions following the solution opposite which they stand. In the fifth column the plus and minus symbols indicate the Wassermann reaction; plus indicates a completely positive, and minus a completely negative reaction. When there is only one sign, it refers to the reaction at the end of treatment; when there are two, to the reaction before and after. The seventh column shows the clinical result at the end of treatment; when no note is made, it means that there was no change noted. In the eighth column are noted any objective results observed at the time of examinations of the patients. The injections were made and the result charted by Dr. E. L. Zimmermann, of my staff, under my directions and supervision.--(_Abstracted in The Journal A. M. A., Feb. 24, 1917._) TABLE 3.--DETAILS OF INVESTIGATION BY DR. KEIDEL