430 Reviews—A Manual of Seismology. 
A chapter on ‘lint-fracture and palseolithic tools contains an 
account of the principal kinds of tools and reference to the 
characteristic tools of different periods, which are more fully con- 
sidered in succeeding chapters, which treat of these periods in greater 
detail. Plates I — V give illustrations of various implements and the 
reader would no doubt wish to have more frequent reference to these 
plates in the text. 
Chapter XIV is entitled “ Prehistoric Man ’’, and the author gives 
only “‘a short general epitome of the various prehistoric races, 
without much special reference to the physical differences in their 
anatomy ”’. This is a difficult task, and the chapter suffers from 
undue condensation. 
The latter part of the work, from page 192 onwards, is devoted to 
prehistoric art. Here the author is at his best. He has himself 
seen niost of what he describes, and the reader will follow this portion 
with keen interest. 
Mr. Burkitt must be warmly congratulated on this book. It will 
be read with pleasure and profit, and is a storehouse of information 
for purposes of reference. It has been suggested above that at times 
he goes further than our present knowledge warrants, but one 
recognizes in this the sign of his intense enthusiasm. No doubt 
alterations will be made in later editions as the result of future work, 
and at the same time several little slips which have escaped notice 
during proof-reading will be altered. That future editions will be 
called for seems certain, for the book is a worthy addition to the 
literature of the science. 
J. E. M. 
A Manuat oF Srismotocy. By Cuartes Davison. pp. xili + 256. 
Cambridge University Press, 1921. Price 21s. 
HK study of earthquakes has always been regarded as essentially 
a branch of geology : it is a subject on which the impress of 
English workers is predominant, yet since the appearance of the 
last edition of the late John Milne’s brilliant, though almost un- 
arranged, handbooks, acy) a full generation ago, there has been no 
satisfactory manual of the study of earthquakes in the English 
language. Modern seismology has run principally to the study of the 
long-distance records of great earthquakes, a subject which is 
interesting, but has little or no geological application. Dr. Davison’s 
manual, being one of a professedly geological series, devotes but a 
small section to this modern development of the clder seismology, 
and is almost wholly devoted to the earthquake proper, which can 
be felt and causes visible damage. To the study of this branch of 
geology it will serve as a useful introduction, covering the ground 
in a satisfactory manner, and at the same time giving ample 
indication of the works which need to be studied by these who wish 
to go deeper into the subject. It might, perhaps, be thought that 
an undue amount of space is devoted to small and feeble earthquakes, 
