ISOSEISMALS: DISTRIBUTION OF APPARENT INTENSITY. 320 
much stronger than the shake produced by the California earthquake of the previous day. 
It was generally felt at Hazen, Wadsworth, Olinghouse, and neighboring places where 
it is hard to find any one that noticed any effects of the great quake. In Hazen it rattled 
windows, made gas jets and lamps swing, and doors swing on hinges. The railroad 
station clock is said to have stopt. At Wadsworth, it made the windows rattle and eaused 
some fear, owing to reports of the San Francisco disaster. One person describes it as a 
quick sharp shock like a blast. At Olinghouse also it was felt as a sharp shock — one 
called it a quiver — and caused windows to rattle. It was felt as far east as Brown’s 
Station. It was apparently not felt at Fallon, tho it was distinctly felt 12 miles west at 
Carson Dam. In the Reclamation Service camp at Fernley it was quite strong, as felt 
on the ground in the tent. Judging from its areal distribution, it is suggested that this. 
earthquake is related to the fault along the east base of the Virginia Range. The rough 
time estimates vary from 8 to 9 o’clock, but in cases where the time was noted more par- 
ticularly, the variation is between 8" 15" and 8" 30". The vibration was apparently 
northwest-southeast, or north-south, at Hazen. At Fernley (a short distance south of 
Wadsworth) it was described as northeast-southwest. 
OBSERVATIONS OF J. A. REID. 
Professor J. A. Reid, who has been engaged for some time past in a geological study of 
the fault-zone of the eastern flank of the Sierra Nevada, made an examination of various 
faults with which he was familiar, with the view of ascertaining whether or not evidence 
could be found of movement at the time of the earthquake. No such evidence was, 
however, found. He also made an examination of several hot springs along the base of 
the mountains, to ascertain what changes, if any, had been caused by the shock. The 
only ones which seem to have been affected are the Steamboat Springs, 12 miles south of 
Reno. 
In addition to making these examinations, Professor Reid obtained some valuable 
information regarding the intensity of the shock, as given in his notes which follow: 
At Reno people were not generally awakened. There were no exact records of the time, 
direction, or intensity of the shock. The movement was large, but slow, and of long 
duration — probably about 40 seconds in total. The clock of ex-meteorological observer 
S. B. Doten stopt. An extension incandescent electric light, on an 8-foot cord, so ar- 
ranged that it could swing only north-south, was set swinging thru a 3-foot arc. This 
was on the first floor of an old wooden house, and gives some indication of the magnitude 
of motion and time of oscillation. Mr. Doten was awakened by the shock and counted 20 
seconds of lesser motion after he was fully conscious. No noise was heard. Another 
observer was awakened, and saw a 4-foot light and cord swing about 18 inches nearly 
east-northeast and west-southwest. At the University of Nevada similar lights were set 
swinging with a large east-west component of motion. 
At Steamboat Springs the shock was felt as a long, gentle swing. A second shock, 
seemingly as hard as the first, was felt the second or third night after. At the Rocky 
Hill Mine, in the foot-hills of the Virginia Range, midway between Steamboat Springs 
and Washoe, the shock was not felt by men at work, and loose rock in the main tunnel 
was not dislodged. 
At other points between Steamboat Springs and Carson, as at Lakeview, Washoe, and 
Lewer’s Ranch, the earthquake was felt as a long, gentle swing. At Bowers Mansion, 
a few feet from the steep granite escarpment of the Sierra Nevada, all sleepers were 
awakened by the shock, which appeared to have greater intensity near the harder, more 
elastic rocks than in the loose valley deposits. The same result occurred’in Carson 
Valley, south of Carson. At and near Genoa, directly at the base of the 4,000-foot scarp 
of the Sierra, the shock generally awoke sleepers, and trees were noticed to swing as in 
