It will perhaps be objected, that a long straight walk can have little variety; but the greatest source of variety in a flower-garden is derived from the selection and diversity of its shrubs and flowers. There is no ornament of a flower-garden more appropriate than a conservatory, or a green-house, where the flower-garden is not too far from the house; but, amongst the refinements of modern luxury may be reckoned that of attaching a greenhouse to some room in the mansion, a fashion with which I have so often been required to comply, that it may not be improper, in this work, to make ample mention of the various methods by which it has been effected in different places.