1884.] Geology and Paleontology. 57 
especialiy those of the north-west, the Germans preponderate. 
-essup has written to the Russian Geographical Society 
that he has explored the Ongouz river, which was previously 
known only in the upper parts. Even the Tekkes did not know 
the route to the east of Mirza-chile. 
GEOLOGY AND PALAONTOLOGY. 
Tne Power or Morion 1n Crinoip Stems.—At the Soldiers’ 
Home, near Dayton, Ohio, I found the stone here figured. Im- 
bedded on its upper surface lay a coil of crinoid joints in such a 
way as to indicate that they had all once formed part of the same 
crinoid stem. Indeed, the former unity of the first 2% coils is 
evident ; but here we find traces of two coils, and a little farther 
out is seen a half coil of larger beads, however the parallelism of 
ERU 
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CLAW LAL 
NERS 
Coil of Crinoid Joints. 
the coils would indicate that these are only parts of the same 
stem, the intermediate parts having been removed and their con- 
nection broken. a 
The stone is of the Clinton group, but I cannot determine the 
species of the crinoid; although separate joints of the stem are 
extremely common, the crinoid heads are lacking. One thing is 
remarkable, the rapid increase in size of the joints of the column 
within 2% coils, or not quite three inches, from } of an inch to 
about four times this diameter. I figure the end disks, enlarged 
two diameters. 
e column is disposed in a perfect and natural coil. It is not 
Customary to find things so arranged in nature unless It 1s either 
a law of their growth or the objects have the power of volition 
and can place themselves in such a position at will, The first 
