26 C. G. Rockwood— Recent American Earthquakes, 
of Lake Champlain and the Hudson as far south as Albany ; 
and finally from Utica, Rome, Auburn and the Mohawk Valley. 
It was probably felt throughout the whole Adirondack region 
which is thus enclosed, but whence no reports could be ex- 
pected. It would thus seem to have been felt over an irregular 
trapezium, whose angles are marked by Pembroke, Ont., Three 
Rivers, P. Q., Hartford, Conn., and Auburn, N. Y.; and which 
is therefore some 200 miles on its northern and southern sides, 
about 800 on the east and 175 on the west. In regard to the 
exact time of the shock the reports differ too much among 
themselves, and are mostly of too vague a nature to permit any 
deductions therefrom as to the direction or rate of progress of 
the vibration. Comparing the reports from thirty-six localities 
in which the time is given, and rejecting three as quite wide of 
the truth, we find them cluster closely about 2 Aa. M., none 
earlier than 1.45, none later than 2.10, most being between 1.50 
a 2 local time. The ~ ones, however, which cee to 
iably accurate are Montreal 1.50 a. (J. W. Dawson), 
Hartford 1.56 (Ed. Hartford Courant)=1.52 idsatroat time, and 
Dudley observatory, AJbany, 1.53 = 1.54 Montreal time. The 
Hartford record is also confirmed by an apparently careful 
report from Windsor, Conn., giving 1.55 a M (25 
reports give in a general way Sa about 2 A. M.,” etc. 
The duration in Montreal was about "twenty seconds. The 
other reports of its duration vary from four or five seconds to 
two or three minutes and in one case five minutes. Most of 
them however gree about half a minute. ch seems to have been 
current testimony of three observers. In some places a rum- 
bling noise and in others two or several shocks were re 
at Dudley observatory “a severe shock of ten seconds duration, 
followed after an interval of thirty seconds by a lighter one ;” at 
Hanover, “a succession of five or six waves, increasing in inten- 
sity for the first third of the time and then decreasing ;” in 
Montreal “a low rumbling sound followed by a sharp soploaas 
and then a tremor.” 
In compiling the — I have been able to compare reports 
from fifty-eight station 
Nov. 14. A slight ion at 9.40 a. m. at Cornwall, Ont. 
Nov. 15. About noon several shocks were felt in Iowa and 
adjoining portions of Kansas, Nebraska and Dakota. The 
- times given were: i loon Gity 1: 12.30 P. M., Council Bluffs 12.15, 
