ISOSEISMALS: DISTRIBUTION OF APPARENT INTENSITY. 263 
2 feet in diameter was broken off about 20 feet from the ground. But little damage was 
done at a house a short distance farther west. On the north side of the creek (at 9, map 
No. 22), the 12-inch cast-iron pipe of the Stanford University water-main, buried about 
3 feet deep, was cracked, allowing the water to spurt 20 feet into the air. 
Beside the road just west of Searsville reservoir, a living white oak 6 feet in diameter 
was uprooted by the jerk of the earthquake shock. (Plate 106a.) At the Searsville 
dam the waste way is 45 feet wide. The water running over the spillway was 4 inches 
deep before the earthquake, but afterward it increased to 5 inches; more water was also 
noticed in the creek that empties into the lake. 
The Preston residence, about 0.5 mile south of Searsville Lake, lost its chimneys. 
Along the road leading from Searsville Lake southeast thru Portola, the water-tanks were 
all thrown down, except one near the junction of the Portola road with the Alpine road. 
The bridge at the north end of the village of Portola had the ends thrust together so that 
the planks forming its floor were thrown out of place. In Portola, brick chimneys were 
all down and water-pipes were broken. The Portola store was thrown off its foundation. 
The Catholic Church in the village is a frame building that stood upon an underpinning 
of posts about 3 feet high. This building was thrown bodily about 2 feet toward the north, 
apparently thrust over by the underpinning when it gave way. The Portola school- 
house was also thrown from its foundation, which was about 3 feet above the ground. 
Two small dwelling-houses southeast of the school-house and on the south side of the 
road were thrown from their foundations. 
Following the Portola road from Portola toward Woodside, the houses showed con- 
siderable damage, with chimneys down. The water-tank at the fork of the road in front 
of Mr. Preston’s house was thrown down, and the big tank at the fork of the road, at the 
site of the old village of Searsville, was also thrown down. The white oaks in the field 
north of the road had also many large branches broken off by the shock. A shanty 
between the 2 bridges (at 11, map No. 22) was down flat; and in a few cases the under- 
pinning of houses had given way, the houses having settled in consequence. Small trees 
were overturned and fences broken. A large live oak had its top broken off about 20 feet 
from the ground (at 12, map No. 22); at the place of fracture the tree is about: 3 feet in 
diameter. ; 
Taking the western road past Newman’s, which is at the place where this road crosses 
Bear Creek, from Searsville Lake to Woodside, two especially well-built water-tanks 
beside the road, tho well shaken on their foundations, did not fall. On the south side of 
the road, about 0.25 mile southeast of Mr. Folger’s, a large live oak was torn up by the 
roots (plate 1068), while several eucalyptus trees had branches jerked off. A strongly 
built 1-story house just below (18, map No. 22), and within 400 feet of the fault-line, 
lost all of its chimneys, but the plaster was only slightly cracked. Beds and other fur- 
niture in the house were jerked in directions parallel to the fault-line. A small bed stand- 
ing in the northwest corner of a room was not moved, but a larger bed near the center of 
the same room was moved several feet. A water-tank a short distance northwest of the 
house, new and strongly built, about 15 feet above the ground, had nearly all of the water 
spilt out of it. An eye-witness says that the water was thrown high up on the northwest 
and southeast sides. The water-pipe running from the house to the pump was bent in a 
curve toward the northwest, and where it entered the pump-house, the boards were broken 
on the southeast side of the pipe. The other pipe (also 4 inches in diameter) had the 
threads stript off at a joint, and the ends of the pipe pulled apart for a distance of 2.5 to 
3 inches. The pipe was new and buried a few inches below the surface of the ground. 
A large oak tree standing 200 feet or so from the house had large limbs broken off by 
the shock. At the Folger place, between Newman’s and Portola, the chimneys were all 
thrown down. 
