764 Editors’ Table. [ July, 
and other objects of a high antiquity, and that some of them are 
of the typical form of the oldest mound pipes, viz.: A cylindrical 
or sculptured bowl rising from the center of the convex side ofa 
curved platform, we are forced to believe that their age is very 
considerable. 
It is highly probable that future investigations may point toa 
still greater antiquity of the art of fashioning objects in pipestone 
than has been positively assigned to it in these pages, and, indeed, 
it is within the range of possibility that the aboriginal operations 
at the Great Pipestone quarry may be proved to have antedat 
the Spanish discovery of America by many centuries. 
:0: 
EDITORS’ TABLE. 
EDITORS: A. S. PACKARD, JR., AND E. D. COPE. 
The unification of geological nomenclature, and of the 
system of colors used for geological maps, are two objects which 
the International Congress of Geologists has proposed to accom- 
plish. So far asthe nomenclature of the formations is concerned, 
the only doubles emplois which occur, and which are likely to 0c- 
cur, are to be found in the different names given by geologists to 
the same formation when they exist in different continents. Such 
duplications are not very numerous, but they are sufficiently 5° 
to demand attention. The only attempt in this direction of uni- 
fication with which we are acquainted, is to be found in the first 
volume of the Comptes Rendus of the Congress, Paris, 1368. It 
was there maintained that while the lesser sub-divisions of the 
formation of Europe and America can rarely be identified, those 
of primary and secondary grade are often clearly the same, 
should bear the same name on both continents. The general 
adoption of the uniform nomenclature may be greatly facilitated 
by its recommendation by the Congress of Berlin. 
A general uniformity in the system of geological coloration has 
long prevailed, but in detail there is much discrepancy. At PI 
sent there are three principal systems in use: those of the com 
mittees which reported to the Congress of Bologna; that of the 
United States Geological Survey, and that of the Geological sar 
1For other objects of pipestone not described here, see proceedings of the Davy 
port Academy of Sciences, Vol. 1, pl. Iv. : 
2 Comparison of the horizons of extinct vertebrata of Europe and America 
