316 REPORT OF THE CALIFORNIA EARTHQUAKE COMMISSION. 
were 2 maxima in the movement of the earth, and the second was the stronger. Some 
men sleeping on a scow on the river 2 miles east of Westley heard a rumbling sound before 
any shock was felt, and came out of the scow to see what it was. Then the shock came 
and the waters rolled and foamed. 
COAST RANGES EAST OF THE RIFT AND SOUTH OF MOUNT HAMILTON, AND THE 
WEST SIDE OF THE SAN JOAQUIN VALLEY FROM WESTLEY TO DUDLEY. 
In the coast ranges on the east side of the Rift, south of Mount Hamilton, and along 
the west side of the San Joaquin Valley, settlements are few and widely scattered, so that 
opportunities for obtaining data as to the distribution of intensity were correspondingly 
rare. This territory was examined by Mr. G. F. Zoffman, under the direction of Prof. 
J. C. Branner, and the results of his observations and of others are embodied in the 
following report: 
Pacheco Pass Road. — Starting from Hollister, the county seat of San Benito County, 
the writer went up the Pacheco Pass road over the Mount Hamilton range to Los Banos, 
in the San Joaquin Valley. There are but few brick or stone chimneys in this neighbor- 
hood, and inquiries were directed to the splashing of milk and the falling of dishes and 
other movable objects. At the entrance to the canyon thru which the road winds, 
several houses were visited. Only a few dishes had been broken and milk was thrown 
only from pans well filled. At Bell’s Station no damage was done beyond the loss of 
milk. High bottles and dishes standing upon shelves were uninjured. The residents 
say that the vibrations were from east to west, and had a rocking motion. Before the 
shock a rumble was distinctly heard coming from the west. 
At ranch-houses about 5 miles northwest of Bell’s Station, and farther up in the moun- 
tains, the shock was of considerably less intensity. 
Mountain House. —'The shock was reported as having been very mild; no dishes were 
thrown from shelves, nor milk splashed from pans. The proprietor states that the 
earthquake began with a north and south movement which later changed to the east and 
west. The shock here should be rated at V. 
Going down into the valley on the east side of the Pacheco Pass the intensity of the 
shock perceptibly increased. At a ranch house 7 miles from the pass, nearly all the milk 
was thrown from pans and all the water from tanks. In a well where the water was 7 feet 
from the surface, some was thrown out. As noted by one gentleman, water was thrown 
from a tank, first from north to south, changing later to east and west. 
San Luis Ranch. — At the east end of the valley, on the San Luis Ranch, Mr. Mills 
stated that he distinctly felt the vibrations begin from north to south; there was then a 
lull of a few seconds and then followed a very noticeable east and west movement. The 
surface of the ground is said to have moved up and down like the waves of the ocean. 
Thruout this valley, which is made up of gravels deposited on firmer rocks beneath, the 
shock appears to have been nearly uniform. 
Los Banos. — On emerging from mountainous districts into the deep alluvial plains 
of the San Joaquin Valley, the intensity of the shock increased, until at Los Banos it 
reached a maximum. <A count of the chimneys showed 57 per cent (17 out of 30) fallen. 
All the brick chimneys were damaged, as shown by the accompanying photographs. 
(Plate 1238, c.) A peculiar feature of the effect upon these structures was that. all the 
damage was on the northeast and southwest sides. Frame buildings were not damaged 
beyond the falling of plaster, or the throwing down of chimneys. According to the 
statements of the residents, and the data obtainable, the vibrations were north and south. 
Volta. — Out of 7 chimneys 6 were thrown down by the shock. The plaster in frame 
houses was considerably damaged, but none of the buildings was thrown from its 
