276 Scientific Intelligence. 
The fact is curious, and not less so are the results deducible from it. 
3. Explorations under the War Department: Explanations of a sec — 
ond edition of a Geological Map of Nebraska and Kansas, based upon — 
information obtained in an expedition to the Black Hills under the com- — 
mand of Lieut. G. K. Warren, Top. Engr., U.S. A.; by F. V. Havpen, — 
Il. Devonian ? 
IV. Carboniferous. 
a ees Ak me agin 
? 
n a paper published in the Proceedings of the A 
Sciences at Philadelphia, March, 1858. The Black 
ve furnished the key to its existence in the far west 
