FISHER: RIVER TERRACES. 
19 
to desert a given channel for a distinctly different one, and so definitely 
to change both the position and the direction of its current. These 
processes are not in themselves constructive. They stop (at one place) 
the deposition of flood-plain layers,— let us say, of the normal type,— 
Fig. E.— Early stage of stream deflection due to cut-off process of lateral 
movement. The river in adjusting itself to the new bend has withdrawn 
from former banks of erosion by the growth of sand bars — the early stage 
in the partition process. The cut-off checked the formation of the flood 
plain by the meander-built process to allow its continuation elsewhere 
by the partition process. 
■only to start elsewhere the deposition of flood-plain layers, and this 
time of the partition type. A river swinging in systematic curves 
would regularly and continuously add layer after layer to the inner and 
