Electrk:al Engineering," by Clifford C, Patterson. These lectures are initiative to a course which the Institute of Physics has decided to offer, both for the purpose of interesting the public in general as to the value of research and pure science in aiding practical applications, and also as a guide to students, suggesting lines of usefulness in their studies. Undoubtedly there has been in most great nations an indifference to the value of abstract research. Englishspeaking peoples have been probably the greatest offenders in this line. Matters have improved somewhat of late years, largely through the severe lessons taught by the war, but much still remains to be done. It is claimed in the preface of this book that there is work to he done for the industries that only physicists can do. This is true, but the claim must not allow us to overlook the fact that there is also much that the chemist alone can do. It is not difficult to name discoveries that when made have seemed remote from practical value and yet have been the initiative of highly useful inventions. The lectures arc a useful contribution to the general propaganda in the cause of greater public support of research.
HENRY LEFFMANN.