It is announced in a London paper that a farmer in Wisconsin planted a "grove" of black walnut twenty years ago, and recently sold it (the grove) for $27,000. Can any one give us the details of this transaction? As it is, the paragraph is scarcely worth the paper it occupies. Was the land valuable when the trees were planted, and does the $27,000 represent the value of the walnut trees? In many places land worth $5 per acre would increase enormously in twenty years, though not a tree grew on it. But if the"groVe" was not very large, the timber here may have given the value.