Pillar moulding is, however, one of the greatest modern improvements; and is used advantageously for lamp pedestals, chandelier work, toilet bottles, salt-cellars, &c., at very moderate cost. This was supposed to be a modern invention, and introduced by the late Mr. James Green, as such, a few years since; but, in some Roman specimens, recently exhumed in the city of London, and now in the possession of Mr. Roach Smith, it is proved beyond doubt that these projecting pillars, and the mode of their manipulation, were well known to the ancients. (See coloured Plate 3, fig. 2.)

The ductility of Flint Glass is strikingly exhibited in the process of Cane or Tube-drawing, which is extremely simple, and depends so much upon tact and adroitness, that it is a matter of surprise how an approximation to uniformity of size and bore can be attained. A solid ball being gathered on the end of the blower's iron, A, if for hollow tube, is expanded a little by blowing, B; but if for cane, blowing is not requisite: when partially cooled, it forms a nucleus for one or more other gatherings, until the requisite quantity be obtained. Where flat bore tube is required for thermometers, the first ball is flattened by an iron or wood battledore, on the marver, prior to the subsequent gatherings; this ensures a flat bore, although the exterior of the tube is round. The ball is then elongated by