This valuable work of some seventy-five pages is a definite contribution to ventriculography. The authors have had at their disposal the material of Professor Olivercrona and Professor Antoni at Seraphimerlasarettet in Stockholm. During the past ten years they have studied almost 2,000 patients pneumographically and 112 by the use of iodized oil. Of the total number, 340 were considered to be normal and form the material of this well illustrated report, which gives in detail the technic used in this important clinic.
The authors state: "In addition to the more conventional projections, many special methods were developed for the study of the various parts of the ventricular system. Thus, routine roentgenography was gradually supplanted by a technic which individualized each case." Variations in the amount of air injected, the position of the subject's head and the angle of projection brought out with considerable clearness the particular parts of the ventricular