ILLUSTRATIONS. IX 
Plate XLV. A] Failure of hollow-tile fireproofing ; /?, Failure of terra-cotta tile 
protection and spalling of lower webs of floor tiles. 
XLVI. A, Brickwork thrown down by earthquake vibration ; />\ Effect 
of severe shaking on well-bonded brickwork filled with good 
morta r. 
XLVII. Sheared rivets, tower of Union Ferry Building, San Francisco. 
XLVI II. A, Buckling of basement column due to failure of plastered metal- 
lath fireproofing; B, Damage said to have been caused by 
dynamite. 
XLIX. A, Failure of basement column due to fire; B, Failure of terra- 
cotta tiling and metal-frame wire-glass windows by fire. 
L. A, Collapse of building due to buckling of columns; B, Failure of 
terra-cotta tile covering in fire. 
LI. Effects of heat on steel work. 
LIL A, Endurance of brick vault; />, Absolute failure of so-called fire- 
proof safes. 
LIII. A, Earthquake damage to brick stack; B, General earthquake 
effect on frame buildings. 
LIV. Destruction by fire, San Francisco; view westward from Tele- 
graph Hill. 
LV. Destruction by fire, San Francisco ; panorama from corner of 
Pine and Powell streets. 
LVL Map of San Francisco, showing burned district. 
LVIL Map of San Francisco and vicinity, showing relation of burned 
district to entire city. 
Fig. 1. Map of the fault trace, page 3. 
2. Diagrams illustrating the nature of the earthquake-making fault, page 4. 
