This is the last of the second edition of this monumental work; the first edition began to appear in 1905, and was completed about 1912.
Such an exhaustive book on this subject has never before been written. Not only is the literature covered so completely that it is safe to say that no important articles in any language have been missed, but all points of view and opinions are reviewed and the clear light of expert criticism turned on them. The authors are not only critics, but the result of experience, study and thought is given in their opinions and advice in a lucid direct way that calls forth admiration whether one agrees with their views or not.
It is especially pleasing to Americans that the book displays such knowledge and recognition of our scientific efforts on nearly all subjects discussed; this is not often met with in the foreign