Battle Creek, Mich., Aug. 14, 1908.
To the Editor:
—In The Journal, Aug. 8, 1908, page 496. is an excellent method for the rapid determination of the percentage of sugar in urine. I wish to congratulate Dr. Moffitt on his success in simplifying this determination of the percentage of sugar so that anyone can do it in a few minutes. I believe, however, that I can suggest a slight change in the method that will make it even more simple. If 1 c.c. of Fehling's solution be added to 4 c.c. of aqua ammonia instead of the distilled water the result will be, in effect, Pavy's solution, in which the reduced copper oxid is held in a colorless solution. The advantage of this method is that the end reaction, when the Fehling's solution is completely reduced, can be more accurately and easily determined. One does not have to wait for