EARTHQUAKES AND OTHER 

 EARTH MOVEMENTS. 



By JOHN MILNE, 



Professor of Mining and Geology in the Imperial College of Engineering, Tokio, Japar. 



With 33 Illustrations. ... lmo, cloth, $1.75. 



An attempt is made in this volume to give a systematic acconrt of various 

 Earth Movements. These comprise Earthquakes, or the sudden violent move- 

 ments of the ground ; Earth Tremors, or minute movements which escape our 

 attention by the smallness of their amplitude ; Earth Pulsations, or movements 

 which are overlooked on account of the length of their period; and Earth Oscilla- 

 tions, or movements of long period and large amplitude. 



' Having chosen Japan as the center of active seismic energies, Mr. "Milne has 

 had the fullest opportunity of studying earthquakes, and this volume gives a sys- 

 tematic account of various earth movements. Disturbances at sea, magnitude 

 of waves, velocity of propagation, records of tides gauges, all find their place in 

 this volume. The m my questions of a cosmical character are all ably treated by 

 Professor Milne. One would have thought that from expeiience the Japanese 

 would have built earthquake-proof houses, but Professor Milne says they Lave 

 not." New York Times, 



"In this little book Professor Milne has endeavored to bring together a 1 ! that 

 is known concerning; the nature and causes of earthquake movements. His task 

 was one of much difficulty. Professor Milne's excellent work in the science of 

 seismology has been done in Japan, in a region of incessant shocks of sufficient 

 enemy to make observation possible, yet, with rare exceptions, of no disastrous 

 effects. He has had the good fortune to be aided by Mr. Thomas Gray, a gentle- 

 man of gre it constructive skill, as well as by Professors J. A. Ewing, W. S. Chap- 

 lin, and his other colleagues in the scientific colony which has gathered about the 

 Imperial University of Jap-.ni. To these gentlemen we owe the best of our sci- 

 ence of seismology, for before their achievements we had nothing of value con- 

 cerning the physical conditions of earthquakes except the great works of Kobert 

 Mallet; and Mallet, with all his genius and devotion to the subject, had but lew 

 chances to observe the actual shocks, and &o failed to understand many of their 

 important features. 1 ' The Nation. 



" This volume contains a treat deal in the way of result? of recent observation 

 that has never before been given to the reading public. A large part of fie ma- 

 terial used watt obtained from experiment and criminal investigation durintr sm 

 eight years' residence in Japan, where the author had an opportunity of observ- 

 ing an earthquake on an average of once a week." Aew York Christian Vrdon. 



" The author considers the primary causes of earthquakes to be telluric heats, 

 solar heat, and variations in gravitating influences. Among the secondary causes 

 are expansions and contractions of the earth's crusf, variations in temperature, 

 barometrical pressure, rain, wind, etc. Some are due to explosions of steam 

 beneath the crust of the earth, others to chemical action forming caverns in the 

 earth which give way, and still others to volcanic evieceralion. The subject in 

 all its bearings is exhaustively treated in the light of the latest researches, ar.d 

 affords a very interesting study of a class of natural phenomena which have al- 

 ways been involved in more or less obscurity." Chicago Eiening Journal. 



" Although it. is addressed to a special class of readers, it has an interest which 

 may be said to be universal. It will surprise readers to be told that nearly two 

 thousand works have been published on the particular subject of earthquakes. In 

 China a commission was appointed more than 1700 years ago to implicate the 

 causes of these phenomena, and sixty-five works exist in the Japanese language 

 devoted to their scientific consideration. The first part of this work deals With 

 the various movements, oscillations, and tremors of the eaith, with their effects ; 

 the later chapters being devoted to the theories of various writers on the phe- 

 nomena. The volume is well illustrated." fioston Evening Transcript, 



New York: D. APPLETOX & CO., 1, 3, & 5 Bond Street. 



