You see, in this story we are traveling backwards into history like Ally Oop in his time machine. But beyond Persia one can go only in imagination. For the Persians, too, were a conquering nation and, no doubt, gathered their booty of gold and sheep and camels, of flowers and bees, from all the then known world which was subject to them. So perhaps Persia, too, has no more right to label her treasures Persian than has Italy with her presumably mislabeled Italian bees, nor England with her undoubtedly mislabeled English walnuts. However, the work of Johnny Appleseed has always belonged, not to his tribe nor to his locality, but to the world. These same Persian walnuts take rank among the better clues by which migrations of the Aryans may be traced over the face of the earth. For instance, not only do they take root easily in the mild, friendly climate of California, but much hardier strains are found to have climbed the Carpathians and the steppes of Russia almost to the very doors of Moscow. Scions of these hardier strains have very recently been made to grow and yield their nuts in America as far north as Toronto and are being set out in numbers in the northern part of the United States. How well they will prosper in this new, more variable and chilly climate remains to be seen, but the start is made. No doubt it will be by Johnny's old method of patient and repeated selection, first for hardiness then for quality, that the planned result will be accomplished. The contributions of Persia and the plantings of its forgotten scientists have here merely been touched on. Nothing, for instance, has been said about her great groves of mulberry trees, which led to silk-worms, which led to silk, which led to the production of jewel-bright vegetable dyes, which led to the development of a decorative art in fabrics that is rivaled by China, alone, in all the world. And of course, Aryan Persia is only one of the many treasure centers of ancient civilization. In scores of racial settlements elsewhere our lives today are being changed and enriched in innumerable ways by the hands of those old miracle-workers whose names were writ in water and whose works are immortal. The accomplishments of China are of such magnitude that even now we are only beginning to discover our debt to her. India, Indo-China, Mongolia, Manchuria, Japan--all have similar backgrounds. Even in the United States, young as it is, the migrations of pre-historic races have left their trails in the gardens and forests around us. Pecans from the South, for example, have been carried North and are gradually developing hardy strains that survived in Indiana and Illinois groves.