In preparing the various volumes in this system, it has been the aim of the authors to publish one volume each year. In the main, this scheme has been carried out as planned, although on two occasions, two volumes have appeared in the same year. Volume I appeared in 1905 and the succeeding volumes have been published at intervals since, and were reviewed in The Journal.While this method of publishing may not appeal to some readers, it nevertheless possesses some advantages in that it is primarily historical. Each volume is complete up to the time of publication. It is not necessary at this time to mention the good features of the previous volumes of this work, but it may not be amiss to emphasize the value of the many references to current literature appended to each article. American works on medicine are woefully deficient in this respect.
Volume VIII, now before