an arched tread and has lateral flanged feet; the footrail, which has a tread like the edg-rail, but, unlike it, has a broad base formed by foot flanges.
The first public railway laid with edge rails was made by Jessop of Loughborough, England, 1789.
They were of cast-iron in 3 or 4 feet lengths, and had vertical holes near each end by which they were wooden-pinned to the sleepers.
They were fishbellied, and subsequently laid on cast-iron chairs.
Wyatt's patent in 1800 was an oval east-it manufacture.
Ugo di Carpi introduced the method of printing in colors or tints by separate successive blocks.
Engraving on wood assumed the character of an art about 1440; the first impression, 1423.
Improved by Durer, 1471 – 1528; by Bewick, 1789.
Engraving on stone. Work done upon a lithographic stone by etching-point, diamond, or rulingmachine : the stylus of the latter is a diamond.
There are two modes, the first of which is the more usual : 1.
The stone is covered with a gum and