It has been known for a long time that hexamethylenamin in aqueous solution has the power of putting into solution considerable uric acid. In illustration of this point we take occasion to report one of our own experiments. An excess of pure uric acid was added to five solutions of hexamethylenamin, and after being shaken they were kept in an incubator at body temperature over night. The uric acid in the filtrates from these was estimated by the usual method, the results being as follows :
35.00 mg. of uric acid dissolved by 100 c.c. of 0.1 per cent.
66.00 mg. of uric acid dissolved by 100 c.c. of 0.25 per cent.
74.00 mg. of uric acid dissolved by 100 c.c. of 0.4 per cent.
158.00 mg. of uric acid dissolved by 100 c.c. of 2.0 per cent.
250.80 mg. of uric acid dissolved by 100 c.c. of 5.0 per cent.