Geographical botany also opposes Knight's hypothesis, as De Candolle[15] points out, for, as he plainly shows, the almond had its origin in western Asia, it being found truly wild in many parts of south-western Asia and having been cultivated many centuries before the peach was known in these regions. On the other hand, the almond was not known in China before the Christian era whereas the peach had been cultivated there at least 2000 years anterior to the introduction of the almond. With such widely separated habitats, the two fruits can hardly be considered as parent and offspring. We cannot close our eyes to the patent relationships of the peach and the almond. That the two constitute but one species, as we now consider species, or that they bear the close relationship of the peach and the nectarine, probably no one now in high authority will concede. But for the weight of the names we have used, and the fact that the theory still finds supporters, Knight's hypothesis, the outcropping of a speculative mind in a speculative age, might have been overlooked or dismissed with a word. THE PEACH IN ASIA We must have more knowledge of the peach in Asia than the bare fact that it originated somewhere in the vast empire of China. We want, first, to know what the characters of the prototypal peach were. If we can get some idea of the original wild peach of China we shall know something of how this fruit has been improved by man and, perhaps, something of its future potentialities. Second, though not essential to this study, it will be profitable to peach-growers to inquire whether there are types of peaches still remaining in China that might be improved under western cultivation. If so, we want them, since our cultivated peaches are not free from faults, some of which we might get rid of by the interjection of new blood. It is now about seventy years since Robert Fortune, the adventurous English plant-collector, began dipping into the horticultural treasures of China; and recent explorations make plain that there are still riches in plants in that country--the fact that they can now be brought through the "open door," instead of as spoils to be smuggled out, makes it easier to obtain any new types of peaches that may now be found.