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.
In a little volume, just published in England, bearing the above title, there is an elaborate plea for "the freer use of the Clematis in garden scenery. "An inappropriate position can scarcely be found, at home in dressed ground, as bedding plants, as pillar plants, as umbrella plants, as single plants, or in masses, about ruins or rock work, or amongst grotesque arrangements of tree stumps, they are equally at home. In fact, the bed, the pillar, the wall, the rock, or whichever it may be, is merely the skeleton or foundation on which the glorious blossoms of the Clematis are to be displayed. Viewed in this light, the rootery (over tree stumps) is one of the most appropriate of all places in which to introduce these splendid plants, inasmuch as its picturesque irregularities - its trunks and arms - just serve as supporters of the gorgeous purple vestments of Queen Clematis, and become, so to speak, the train bearers, who spread them out in all their rich exuberance and amplitude, before the gaze of her admiring and astonished devotees.
In regard to training, all that will usually be required will be to lead the young shoots, during their spring and early summer growth, as evenly as possible, over the manes of roots - or rock if pi anted on a rockery - leaving them afterwards to fill out the picture in their own natural way.