"It is perfectly hardy on Long Island, and to the south of New York, and as far north as the city of Charlestown in this State (Mass.), where there may be seen, in the enclosure of a residence on Harvard street, two fine trees of this kind, either of them much taller and larger than our large-sized apple trees. We have eaten nuts from these trees well ripened and fully equal to any of those imported. The trees often bear a crop of some bushels." It is unnecessary to search for further proof to show that certain excellent varieties of the Persian walnut do thrive and bear abundantly in our Northern States; not, perhaps, in the extreme boreal borders of New England, nor in those of the northwest, but the acclimated sorts are pretty safe as far north as 42° of latitude, and in protected locations may crowd up a half degree more. I have found very productive trees of this nut in northern New Jersey, several in Bergen county, others in Passaic, and thence southward, and while they are few in number, they are sufficient to prove that this tree is adapted to the soil and climate of the entire State. We seldom find more than one or two trees in any garden, and these are probably more the result of accident than design, their owners seeming to be satisfied in possessing something in the way of a tree not common in the neighborhood, never thinking that it might be well to plant enough of such trees to have them become a source of revenue. The parentage of quite a number of these bearing trees is readily traced to the Morris and Tieman stock, showing that these old trees are of a hardy and prolific race, which are well worthy of perpetuation for cold climates. Very old and large walnut trees are reported as growing in Pennsylvania and other of the Middle States, but they are far from being numerous. It has long been claimed that this species of nut succeeded best in the Southern States, and it is probably true, especially with the tender varieties; but for some reason, unknown to me, they have not been planted there in sufficient numbers to have, as yet, become of any commercial importance. During the past twenty-five years these nuts have been more extensively planted in California than elsewhere in the United States, and we may expect soon to know something definite in regard to results. Nearly all of the favorite French varieties have been introduced, and are now being tested in different parts of the State, and it is quite likely that the greater part will succeed, although some of the early-blooming sorts may fail in localities subject to late spring frosts. Previous to the introduction of grafted trees of the named varieties, the only trees of this kind planted in California were seedlings raised from the common imported nuts; but I have no statistics at hand to determine the date of the first plantings of this kind.