⇑lines 21—6 score
bottom-margin annotation this bears on instinctive walking
The nervous fluid flows into habitual chanl
from End Slip, Side 1 annotation 935 instinctive walking ( Heredetary easy flow of nervous force to certain muscles) 939, 943

concepts
lines 20—22 score
lines 19—22 underline "the appropriate ... system"
lines 22—23 annotation (a)
bottom-margin annotation There are hereditary in Horses paces.—
from End Slip, Side 1 annotation 949 — 950 on ■importance of■ Coordination.

subjects