362 Notices of Earthquakes. 
skeleton; and at ¢, c, a stoloniferous passage} magnified 25 
eters, 
Fig. 4. One of the site of tubuli cut transversely ; magnified 100 
diam 
5. Part of a a Ae of tubuli cut transversely; magnified 200 
diameters, 
6. Portions of the proper wall of the chambers, showing its 
ummuline tubulation, as seen at @ in longitudinal, and at b 
in transverse section ; magnified 100 diam 
7. Cast of the interior of canal- syslem; an antirs ‘goles magni- 
fied 10 diameters, 
Art. XXXVII.— Notices of Earthquakes. 
I. Notices of the Earthquake of August 17th, in the a teen Valley ; 
received from Dr, A. Wisuizenvs, of St. Lou 
1. Note by Dr. Wislizenus.—In the city of St. Louis the motion 
was felt by many persons in two distinct shocks, but lasting, in 
my estimate, not longer than about twenty seconds. Some o 
served its direction as going from north to south. 
2. Notice from the Missouri Republican, of St. Louts, Aug. 18, 
1865.—The shock of an eart hquake was sensibly felt in this city 
yesterday morning at 25 minutes to 9 o'clock. “The motion was 
an oscillating one, , the earth seeming to swing gently, like the 
Beedle of aclock. It lasted nearly a minute and a half-the 
iate m one vane slighter than was perceived at the 
Senicinp and end o shock During its duration, chamber 
farniture, gas is bres ae could be seen to rock, and a cracking 
sound proceeded from the walls of the houses, as if their steadi- 
hess 
Oil. Aug. 17.—A severd shock of an earthquake was 
here at 8b 45m this morning, causing people to rush out of 
their houses i in the greatest consternatio 
Jackson, ange Aug. 17.—The effet of the earthquake 
ously felt ; 
ffice, 
t the middle ‘ot. bs an 
and observation, I heard, as 1 
Shears Siting thunder. This 
