Abstract
Colorimetric pn determinations of the prostatic secretion and of the semen have been made. The P[image] of normal prostatic secretion (colorimetric method) is 7.24; in chronic prostatitis, 7.3; of the semen, 7.5. The readings do not support the theory''that the prostatic secretion activates spermatozoa by an alkalinizing action.

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