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.