388 7. 0. Chamberlin—Hillocks of angular Gravel 
at the base of moulins, so near the edge of the glacier that 
uffer obliteration by subsequent me- 
very rare, if not altogether wanting, in superticial debris. 
an end of it. But at the outset of this article the manifest 
need of a stricter classification was alluded to. This must 
necessarily carry with it, or at least eventuate in, a more pre- 
cise use of terms. These terms should be either simply struc- 
tural or simply genetic, or else indicative of a given structure 
having a given origin. At present the term, kames, is applied 
broadly to embrace, on the one hand, mounds, hummocks and 
peaked hills, and, on the other, extensive branching gravel 
