ISOSEISMALS: DISTRIBUTION OF APPARENT INTENSITY. 271 
1.5 inches wide and ran east and west. The 90-foot brick smoke-stack of the San Lo- 
renzo tannery, which is about 18 feet in diameter at the base, was unharmed by the shock. 
It is said that as far as was observed, there was no change in the appearance of the sea- 
level at Santa Cruz; nor was there any damage done by the sea, nor any unusually large 
waves at the time of the shock. 
At the Southern Pacific bridge, crossing the San Lorenzo River, there is a network 
of fissures varying from 2 to 15 inches in width, running thru the sandy soil. The direc- 
tion of the main fissures is east and west, and they are on the south side of the river, 
which is nearest the bay. The ground has settled about 10 inches from the abutments 
and piers of the bridge. The depth of the fissures was indeterminable, as they had 
filled with sand. At Santa Cruz the inhabitants reported that near Olive Springs, 12 
miles north of Santa Cruz, a landslide demolished Loma Prieta Mill and killed 9 men. 
(G. A. Waring.)—The city of Santa Cruz furnishes excellent evidence of the effect 
of soil formation on the intensity of the earthquake shock. On the high ground in 
Garfield Park, and also in the northwest part of the city, only about one-fourth of the 
chimneys fell and a little plastering was cracked; while in the lower ground near the 
business section several brick and stone buildings were partly shaken down. The San 
Lorenzo River was churned into foam, the banks cracking and settling several inches; 
and sand, said to have come from a depth of 100 feet, was forced up in several places. 
The bed of the river is also said to have sunk several inches, and the current to be slower 
than before. A 6-inch water-main, running east and west across the river at the covered 
bridge, was broken at each end of the bridge and moved 5.5 inches eastward. A man 
out of doors, facing south, was thrown east, then in the opposite direction. A eucalyp- 
tus grove south of him swayed violently east and west. 
Along the beach the shock seems to have been less severe. The running engines of 
the power-plant at the Casino were unaffected. ‘Things were thrown mostly from the 
west wall in a curio store on the beach. The wharfinger says he heard a rumble before 
the shock, coming from the southeastward; and saw the seismic wave traveling shore- 
ward, causing a great rattling and crashing when it struck the town. Two distinct periods 
of vibration were felt, the latter being the harder. There was very little surf, the water 
looking like that in a tub when jarred. A safe in the wharf office rolled 3 feet eastward 
against the counter, then back again hard against the wall. The wharf, extending 
southeast, seemed to pitch lengthwise. Mr. W. R. Springer, jeweler, reports that out _ 
of 25 clocks repaired by him, which had been injured by the shock, 20 had their pen- 
dulums thrown off. 
At the Santa Cruz light-house, a noise as of a wagon crossing a bridge preceded 
every quake. The motion seemed vertical as well as horizontal, for the glass globe over 
the lamp was jarred out and broken. In the curio-store at Vue de |’Eau, nothing on 
the lower floor was disturbed and only a few vases and pieces of bric-4-brac on the second 
floor were displaced. The shock seemed to come from the south. No effect on the surf 
was noticed. 
(R. Collom.)—Going north from Santa Cruz, a small fissure ran northwest and south- 
east on the Boulder Creek road, about 0.75 mile northwest of the California Powder 
Works. Along the lower end of this road were several small and unimportant land- 
slides. In general, the shock in this region does not seem to have been as severe as it 
was farther north. 
Road into Scott Valley (B. Bryan). — Following the road from Santa Cruz into Scott 
Valley, at a summer hotel the chimneys were cracked all the way down, but were still 
standing; light objects on the first floor were moved, and bureaus on the second floor 
slid a foot or so. A 1-story frame house (at 53, map No. 22) was moved 4 feet or 
more, and a piano and other heavy objects were shoved across the room. The damage 
