The Aristotelian would find no difficulty in such a variability; it is only the disciple of Dalton to whom it seems impossible.
Gives some data as to the variability of thunder from year to year.
But the causes and conditions of variation have yet to be thoroughly explored; and the importance of natural selection will not be impaired, even if further inquiries should prove that variability is definite, and is determined in certain directions rather than in others, by conditions inherent in that which varies.
Is a large tree remarkable for the variability in the shape of its leaves, which are linear in young trees and vigorous shoots, and broad and ovate on older branches.
When we consider, however, the great variability in those surroundings and the consequent changes a plant must encounter, it appears obvious that interaction ~nd adjustment between the plant and its environment must be constant and well balanced.
How would you define variability? Add your definition here.