Fruit-growers on one side hold that the Mazzard is the best stock for all orchard varieties of this fruit while nurserymen controvert this view and say that the Mahaleb is at least a fit stock for sweet sorts and is the best one for Sour Cherries, and, moreover, that it is now impossible to grow cherries on Mazzard roots at prices that fruit-growers are willing to pay. Since no systematic attempts seem to have been made to determine the peculiarities and values of these two and other cherry stocks both sides dispute without many facts. Meanwhile, a fine crop of misunderstandings has grown up about the whole matter of cherry stocks. It is worth while to attempt to clear up some of the misunderstandings. The first step toward this end is to describe and give the botanical and horticultural relationships of the Mazzard and Mahaleb cherries to orchard cherries. The Mazzard, as we have seen, is a common name, of uncertain origin, of the wild Sweet Cherry, _Prunus avium_, from which has come all cultivated Sweet Cherries. It is important to recall that the trees of the Mazzard reach a height of thirty or forty feet and the trunk often attains a diameter of eighteen or twenty inches. Other characters to be kept in mind are that the Mazzard lacks hardiness to cold but grows vigorously and is usually healthy, though susceptible to several fungi, one of which, the shot-hole fungus, _Cylindrosporium padi_, makes it a most difficult plant to grow in the nursery. Trees and fruit coming from the Mazzard used as a stock are very uniform, a fact easy to ascertain in New York where this stock has been largely used for nearly a century. The Mazzard is almost always grown from seed for stocks though suckers are occasionally used--a poor practice. [Illustration: _PRUNUS AVIUM_ (MAZZARD)] The Mazzard, or at least the Sweet Cherry, has probably been more or less used as a stock since the earliest cultivation of this fruit. The Greeks and Romans practiced budding and grafting centuries before Christ's time and when the cherry came to them as a domesticated fruit, at least three or four centuries before Christ, they undoubtedly made use of budding and grafting[40] to maintain varieties and in the case of the Sour Cherry, if they had it, and they probably did, to avoid the suckers that spring from the roots of the trees. The literature of fruit-growing is scant and fragmentary during the Middle Ages but beginning with the herbals in the Sixteenth and Seventeenth Centuries there are many treatises on fruits and botany and in several of these the use of the wild Sweet Cherry, the Mazzard, is mentioned.[41]