In this region the St. Julien is probably the next most common stock in plum orchards though trees on it are for most part old, as its use is on the decrease. There is a wide-spread opinion among plum-growers that this is a much better stock for Domestica and Insititia plums than any other. On St. Julien stocks varieties of these species, it is claimed, with much to substantiate the claim, produce trees that are longer-lived, thriftier, hardier, deeper feeders, sprout less and are less susceptible to changes in soils. The chief objections to this stock are: It is more expensive, sometimes scarcely obtainable in France; difficult to bud; the young trees do not make as good growth as on the Myrobalan stocks; and the yearlings are much more susceptible to fungi while in the nursery row, though the latter troubles can be remedied wholly or in part by spraying. Hansen, in the reference given above, says that “the St. Julien and European Sloe (_Prunus spinosa_) both winter-killed” in South Dakota when used as stocks. The St. Julien stock is propagated from layers when properly grown in France[151] but much undesirable stock is now raised from seed. There are fruiting trees of this stock about the nurseries in the neighborhood of this Station which show it to be an Insititia of the Damson type, a type likely to come fairly true to seed yet not sufficiently so as to make seed-grown trees desirable. The Horse plum was formerly used as a stock by nurserymen a great deal but is now wholly superseded. Indeed, it is so nearly lost to the trade as to make it almost impossible to really know what the plum of this name is. Some describe it as a small-fruited Domestica, others as an Insititia similar to the St. Julien, but the majority of the trees shown by old nurserymen in the nursery region of New York, about the only place in which the stock was used, show it to be a Cerasifera but not Myrobalan. Some of the named varieties of Cerasifera probably sprung from sprouts of this stock. It seems to have had no qualities which would make it worth while to attempt to re-establish the stock.