This book was written mostly by Stumpf; in other words, he was not merely the editor. In the first 43 pages he takes up a discussion of what roentgen kymography is, the methods of using it and the apparatus for taking kymograms and for viewing and measuring them. He measures not only outlines but also variations in density, so that a time curve of the alteration of the thickness of an organ may be obtained. He explains the distinction between surface kymography made with the grid moving and staircase kymography made with the film moving. He points out that each method has its uses. The rest of the book is taken up with a discussion of the uses of kymography for diagnosis in various parts of the body.
There are about 120 pages devoted to the heart in health and disease, and the movements of the heart are analyzed with