Etude élémentaire des arythmies: Lecture des électrogrammes, phono et cinématographie.

In the earlier chapters, Lutembacher discusses several novel instrumental aids to the study of the heart. He describes the phonographic registration of the heart tones and their transmission to a distance, where they are heard through many stethoscopes (pluri- et télé-auscultation); also the graphic registration of heart tones as well as cinematographic representation of coarse and minute movements connected with the heart. There is a brief but clear presentation of the salient features of the various arrhythmias with illustrative electrocardiograms and phlebograms. The book is well printed on fine heavy paper and the illustrations are beautiful and clear. Especially worthy of praise are those showing the normal and the pathologic heart, in which the different structures stand out with remarkable distinctness. The volume is informing in character but it is perhaps better to class it as stimulating and as inciting one to further investigation.