This is a welcome addition to the subject of the normal and pathologic physiology of the bladder. Assembled here is a critical survey of all the literature on the function and innervation of the vesical musculature, sensibility of the bladder, and the relations of the normal act of micturition to higher centers in the spinal cord and brain. A number of instructive experiments made by the author are reported. The chapters on disturbances (both organic and functional) in the act of urination will be of especial value to the internist, neurologist and urologist. The book can be warmly recommended as the best monograph so far published on the subject.