The Madison Type of Drumlins. — Upham. 
'■■>> 
Detailed descriptions of these sections, with figures of them 
and a map showing the four sea-cliffs and a remarkable esker 
called Coleman's hill, extending a mile westward from the 
Fig. 6. Section of Fourth Cliff; length, about 2,000 feet; hight. 60 feet above the sea. 
drumlin of the Third Cliff, are given in the second of my pa- 
pers in the Proceedings of the Boston Society of Natural 
History before cited. By the kindness of the secretary of this 
society. I am permitted also to present here these figures and 
map, for comparison with the Madison drumlins which are 
Fn;. 7. Part of the section of Fourth C'iff, on enlarged scale; length, about 430 feet: 
hight. 55 to 60 feet above the sea. 
shown in Plate in. The extraordinary structure of the fill- 
covered hill of Third Cliff, and its topographic position in the 
same east and west line with the esker of Coleman's hill, con- 
vince rae that the two were formed rapidly and in close suc- 
cession, the esker after the drumlin. during the retreat of the 
ice-sheet, here withdrawing from east to west, at the end of 
the Glacial period. 
Simii.au drumlins, with more nucleal stratified sand, in 
Madison, Wisconsin, 
Three hills of thi- class or type, each having a large central 
mass of stratified sand and fine gravel, with a superficial 
veneer, mostly ."> \>> LO feet thick, of boulder-clay or till, 
-land in an east to wot -erics forming the nio-t conspicuous 
elevations of the city of Madison, Wisconsin. The state cap- 
itol crowns the eastern one of these peculiar drumlin-: the 
oldest building of the state university is on the summit of the 
second; and the cresl of the third and mosl western, where 
the president of the utii versi t y formerly lived, i- now, -ince 
1878. the site of the Washburn Observatory and of the pee 
