The fourth edition of this excellent textbook differs little from the third which appeared in 1920. By omitting some material belonging more properly to chemistry and anatomy, the volume has been reduced from 1,298 to 1,058 pages.
The sequence in which the various topics are taken up remains unchanged, and it is not always satisfactory from the pedagogic standpoint. The author starts out well enough by a review of the material and the energetic bases of the body which the student should but probably does not know. After treating the most obvious and easily observable phenomena of movement and sensation, he discusses the central nervous system. He has added to the chapter on the cerebrum a brief but satisfactory exposition of Pawlow's work on the conditioned reflexes, but the subject of sleep is not even mentioned. Apparently Professor Starling is one of those who consider sleep unworthy of consideration by