This section is from "The Horticulturist, And Journal Of Rural Art And Rural Taste", by P. Barry, A. J. Downing, J. Jay Smith, Peter B. Mead, F. W. Woodward, Henry T. Williams. Also available from Amazon: Horticulturist and Journal of Rural Art and Rural Taste.
Small trellises over walks may be introduced with effect, by judicious taste. As to summer-houses and arbors generally, too much insipidity is scattered about the world in suburban gardens, under the vain pretence of ornament and use. The majority are like toll-houses or meat stalls, destitute of elegance, use, and expression of purpose. A summer-house need not be utterly hidden; but it ought not to stare us straight in the face from a back wall, its ugly lattice-work without one creeping tendril, and its interior visible to every gazer, as if it were anything but a place of shade and rest. Though you never use it, it must appear fit for use or it is no ornament. It should be well shrouded with greenery, be easy of access, sufficiently inviting to attract a stranger, yet quiet in tone, and of a chaste, pleasing outline. Some suburban retreats have what are called "arbors," but which are a perversion of the name. The accompanying little sketch representing an arch covered with the Dutchman's pipe, Aristolocia sipho, is made of thick iron wire, and may safely be imitated.