An unusually short man and an unusually tall man, photographed beside
extreme varieties of corn which, like these men, owe their differences in height
indisputably to heredity rather than to environment. No imaginable environmental
differences could reverse the positions of these two men, or of these two varieties of
corn, the heredity in each case being what it is. The large one might be stunted, but the
small one could not be made much larger.
