This well written and beautifully illustrated monograph is based partly on the literature and partly on the author's own work. About 200 human hearts were used in this study and comparative observations were made on hearts of other mammals. The lymphatics were rendered visible by the injection method. Many illustrations of historical interest are reproduced.
The monograph is purely anatomic and was presented to the faculty of medicine as a thesis for the degree of doctor of medicine. If this monograph is the type of scholarly requirements for the degree of doctor of medicine in Denmark, that little country has apparently something to teach us in this direction. It is to be regretted that the monograph is so exclusively anatomic. It would have been more valuable if the problems on the significance of the heart lymphatic system in the various conditions of heart disorders also had been considered. It is