1 Steel Caisson
4 Sydney Harbour Bridge
5 Zambesi Bridge
6 Bucket Dredger
8 Hydraulic Lift Lock
9 Lock, Panama Canal, Central America
10 Electric Shovel
11 Slab Charger for Furnace
14 Electric Furnace
|
15 Electric Lifting Magnet
16 Hydraulic Press
17 Electric Unloader
19 Electric Dumper
20 Gold-dredger
24 Reflecting Telescope
25 Generating Station
26 Electric Motor
29 Electric Winding Engine
|
30 Modern Aqueduct
33 Croton Dam and Spillway, U.S.A.
40 Train Ferry
42 Wrecking Crane
47 Rotary Snow-plough
49 Tunnel Construction
50 Lidgerwood Unloader
|
