THE 
AMERICAN GEOLOGIST 
Vol. XIV. AUGUST, 1894. No. 2. 
THE MADISON TYPE OF DRUMLINS.* 
By Warren Upham, Somerville, Mass. 
(Plate III.) 
CONTENTS. 
Page 
Drumlins enclosing nucleal beds of sand and gravel, but mainly com- 
posed of till, in Winthrop and Scituate, Mass 69 
Similar drumlins, with more nucleal stratified sand, in Madison, Wis. ..73 
Altitudes in Madison and its vicinity 74 
Subglacial deposition of the nucleal beds 78 
Accumulation of the overlying till 80 
Drumlins enclosing nucleal beds <>k sand and gravel, but 
mainly composed ok till, in winthrop and s( i'll ate, 
Mass. 
The earliest publications known to me of observations of 
drumlins structurally resembling those which form the sub- 
ject of this paper are by Mr. W. W. Dodge, of Cambridge, 
Mass.,f and by the present writer,* describing the oval hills 
of till called Great Head in Winthrop and Third and Fourth 
(lift's in Scituate, Mass., each of which is nearly half washed 
away by the sea. Great Head, having only a slight thickness 
of basal and nucleal stratified beds, is one extreme of ;i scries. 
Its middle term is represented by the Third and Fourth 
Cliffs. Its most full and complete expression is found in the 
Capitol, University, and Observatory hills in Madison, Wis- 
consin, consisting chiefly of a nucleal mass of sand and gravel 
with a veneer of till, which I had opportunity to examine 
*A j taper presented before the Geological Society of America at the 
Boston meeting, Dec. 29, 1803. 
(•Am. .lour, of Science, third scries, vol. xxxvi, p. 56, July, 1888. 
^Proceedings, Boston Society of Natural History, vol. xxiv, pp. 127- 
132, Dec. 19, 1888; and same vol., pp. 228-242, April 17, I88D 
