Each normal human body resembles every other such body, in form, size,
and structure; in chemical elements, organs and parts. But it differs
from every other in these particulars: (1) The atoms of which it is
composed are exclusively its own; (2) it is a new combination of these
atoms; (3) it grew anew, for itself, separately and apart from, and
independent of, every other such body; (4) the forces and motions,
which produced it, were peculiar to it, in origin, time and space.
See Cent. Dic. Supplement, “A-L,” p. 582. “Heredity;” Encyc. Brit. (9
ed.) 24, p. 818, “Variation.”