Dr. Norris's book on blood-pressure is certainly the best work on that subject in English up to date. The chapter on physiology of blood-pressure, contributed by Dr. J. Harold Austin, is an admirable summary of knowledge on that point. The account of the different instruments for measuring blood-pressure is full and clear. In fact, this account seems rather unnecessarily full ; doubtless Dr. Norris felt that he would be accused of partizanship if he did not describe and picture almost all the instruments now in the market. But it appears that the time has come when such an accusation must be risked, and it is to be hoped that future books on this subject will not describe more than two or three instruments, including the ones the author finds most valuable.
The chapters on clinical aspects of blood-pressure measurement are admirable, although on page 182 the arrangement