Section 99.—MATERIALS EMPLOYED IN CONSTRUCTION.
(See also [p. 224].)
[2573]. Ribbed plate or tram plate.
[2574]. Trough plate for flooring bridges &c.
[2575]. Trough plate for flooring bridges &c.
[2576]. Curved ditto. Hobson’s patent.
[2577]. Wrought-iron or steel dished piston forging.
[2578]. Wrought-iron flanged manhole forging.
[2579]. Trough flooring.