708 MYRON L. FULLER 
lar gaps, originally extending downward to the level of the sea from 
three to eight feet below. An interesting feature, however, was 
presented by the absolutely straight and regular fissures, sometimes 
fifty or more feet long, and determined by the line of excavation made 
Fic 6—Earthquake crack due to lateral displacement along line of old sewer 
excavation. (Photo by Fuller ) 
years before for the sewer. In all cases the fissures were parallel to the 
water front and resulted from the separation of a narrow strip along 
its margin, generally slightly displaced and somewhat tilted toward 
the sea. 
Faulting. —Very little faulting took place in the alluvial deposits, 
