J. D. Dana—Phenomena of the Champlain Period. 118 
These observations were all incidental to other work, and 
therefore incomplete; but they are deemed important as indi- 
cating the broad extent of the region over which the northern 
glacial drift has been distributed. 2 
Art. XIII.—Phenomena of the Glacial and Champlain Periods 
about the mouth of the Connecticut Valley—that is, in the New 
Haven Region; by JAMES D. Dana. (With Plates I and IL) 
In the last volume of this Journal the phenomena of the 
Glacial era in the New Haven region were described and dis- 
cussed. It remains to describe— 
Il. THe PHENOMENA OF THE CHAMPLAIN PERIOD, OR THE CON- 
SEQUENCES OF THE GLACIAL FLOOD IN THE New Haven 
In order that the facts connected with the flood-deposits may 
be clearly understood the map used for illustrating the former 
paper is here reproduced (Plate I) with the area of the great 
flood-plain or terrace-formation colored. ‘The scale of this map 
is four-tenths of an inch to the mile. Another map on a inuch 
larger scale—itwo inches t» the mile—of the middle portion of 
the region is presented on Plate II, giving the details with 
regard to the topography along the valleys and over the plain, 
the heights above mean tide, and by contour-lines the features 
of the adjoining country. The dotted line at the base of the 
hills is the boundary of the flood-plain or terrace-formation. 
are cross-lined. The contour lines are for aioe 20 fe 
Am, Jour. ero thlageis Series, VoL. XXVII, No. 158,—Fex., 1884, 
20 feet; inthe 
ut the heightsin 
