heart's action which have not been thoroughly described heretofore or erroneously interpreted. The author has attempted to reduce to order and system a vast amount of information, and while he does not claim to have been entirely successful in his attempt, the work is without doubt a contribution to our knowledge and will clear up certain facts that are more or less puzzling. Dr. Mackenzie believes in the sphygmograph and the large number of tracings which he gives throughout the book show how

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... uch he has depended on it. He says correctly if we would use graphic records to verify observations of teachings we would gain in accuracy. The book is not one that is exactly easy reading except to those who are more or less acquainted with the physical signs of the heart, but to the cardiac or thoracic specialist it ought to be of real value as a work of reference and study. out the book very little reference is made to fetal remains. On page 83 the appendix is said to have an average length of from four to seven inches. This is much too long, at least according to the experience of American surgeons and anatomists. The supports of the kidneys are well elucidated, and Figs. 178 and 179 show very clearly the anatomic relations and the supports themselves. Hardly enough emphasis is placed on the relation of the axis of the uterus to that of the vagina.