1820, Thomas Waring, “Attitude in Shooting”, in A Treatise on Archery; or, The Art of Shooting with the Long Bow.[…], 2nd edition, London: […] A. Seale [for Thomas Waring], →OCLC, page 21:
Many Archers use a piece of waxed cloth, which is of great utility, as it not only gives the Bow a polish, but is a preventative against damps penetrating; this precaution however, is not so much required for self Bows, as backed ones. Self Bows are made of one piece of wood only, and that is generally of yew, but the long known difficulty of procuring good English yew, has compelled Bow makers of late years, to resort to various other woods, all containing great spring, but little pliability; the deficiency of the latter is amply supplied by the addition of a slip of ash, or some other tough wood glued to them; the toughness of the one combined to the elasticity of the other, both acting in conjunction, make capital Bows, and these it is that are called back'd Bows.
1831, T[homas] B[urgeland] Johnson, “BOW”, in The Sportsman’s Cyclopedia;[…], London: Sherwood, Gilbert, and Piper,[…], →OCLC, page 78:
[A] backed bow does not exceed a self bow, except that it is thought by some to be pleasanter and easier to draw, especially in the last inch, and of quicker cast.
Modern bows are of two kinds, viz. self bows and backed bows. The self bow is composed of only one kind of wood; but the backed bow is composed of two kinds of wood, both the full length of the bow, carefully joined together.
