480 THE JOURNAL OF GEOLOGY. 
and the one several feet above the broad dark band after curv- 
ing sharply about runs several rods backwards before it is lost 
from sight under the sloping débris. (See Figs. 29 and 30.) 
The drumloidal* nature of the curve described by these lay- 
ers is very suggestive, and it is perhaps not too much to believe 
that the essential principles of drumlin formation are here 
expressed. It will be wise, perhaps, to defer inferences and 
special discussions until other phenomena of like nature are— 
described and a broader basis for induction is laid. 
T. C. CHAMBERLIN. 
™I suppose that drumlinoidal is the rigidly correct adjective to use here, but as 
drumloidal is briefer and better in itself, it seems preferable to be governed by the 
euphonies and utilities of language than by the stiff formulas of a conventional gram- 
Mar. 
