The Country Seat Of George Sheaff, Esq., one of the most remarkable in Pennsylvania, in many respects, is twelve miles north of Philadelphia. The house is a large and respectable mansion of stone, surrounded by pleasure-grounds and plantations of fine evergreen and deciduous trees. The conspicuous ornament of the grounds, however, is a magnificent white oak, of enormous size, whose wide stretching branches, and grand head, give an air of dignity to the whole place. Among the sylvan features here, most interesting, are also the handsome evergreens, chiefly Balsam firs, some of which are now much higher than the mansion. These trees were planted by Mr. Sheaff twenty-two years ago, and were then so small, that they were brought by him from Philadelphia, at various times, in his carriage a circumstance highly encouraging to despairing planters, when we reflect how comparatively slow growing is this tree. This whole estate is a striking example of science, skill, and taste, applied to a country seat, and there are few in the Union, taken as a whole, superior to it.*