MORAINES OF RECESSION 463 
A= Gecrating Retreat without Readvances 
ve of Climatic Oseriier,, 
Laos Os YA 
MN 
NZ 
7 
: 8 by4 3 
Moraine--- ---Cross-sections 
Be Siccllatien with Readvances 
(c) Overlappins ; (a) 
| Moraine_ 
, | &-Sections 
0 ee 
Gi j G : G i O C C Oscillations of the 
Ice-front 
C— Oscillation Superposed on aGreater, S lowly-Accelerating Climatic Amelioration. 
— of Climatic Ose sss 
Sr 
Fic. 4. Showing combinations of the period oscillation with the greater climatic 
change. 
