CONTENTS. 
Page. 
Preface, by Joseph A. Holmes xi 
The Earthquake as a Natural Phenomenon, by G. K. Gilbert 1 
Introduction 1 
The fault trace 4 
Cracks 7 
Dislocations of surface material 7 
Motions constituting the earthquake 10 
Distribution of intensity 12 
The Effects of the Earthquake and Fire on Various Structures and 
Structural Materials, by Richard L. Humphrey 11 
General discussion of the earthquake conditions 14 
Effects on structures outside of San Francisco 17 
Conditions in San Francisco 25 
General earthquake conditions and effects 25 
Behavior of individual structures 30 
General statement 30 
Academy of Sciences building 31 
iEtna (Young, or Commissary) Building 31 
Appraisers' warehouse (United States custom-house) 32 
Aronson Building 32 
Bekins Van and Storage Company's building 33 
Bullock & Jones Building 33 
California Casket Company's building 33 
Call (Claus Spreckels) Building 34 
Chronicle buildings 35 
City hall and hall of records 35 
Crocker Building 36 
Emporium 36 
Fairmount Hotel 37 
James Flood Building 37 
Grant Building 37 
Hotel Hamilton 38 
Hibernia Savings and Loan Society's building 38 
Hobart Building 38 
Jackson Brewing Company's building 39 
Hall of Justice 39 
Kaimn Building 39 
Kohl (Hayward) Building 40 
Majestic Theater 40 
Mercantile Trust Company's building 40 
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