The
Canvas Bucket. Mr. Halliday's Water Wheel.
CHAPTER XXII.
THE LOG CABIN
Foundation of Log Cabin. A Logging Expedition. The Log Raft. The
Sail-Rigged Raft. Building the Log Cabin. The Roof of the Log Cabin. Door
and Window Frames. The Fireplace. The Proper Way to Build a Stone Wall.
The Floor of the Cabin. The Door Hinges and Latch. The Window Sash. Bunks.
Stopping up the Chinks.
CHAPTER XXIII.
THE WINDMILL
Digging the Well. The Windmill Tower. The Crank Shaft. The Wind Wheel. A
Simple Brake. The Pump. Pump Valves. Action of the Pump.
CHAPTER XXIV.
THE GRAVITY RAILROAD
The Car. The Flanged Wheels. Car Axles. Mounting the Wheels. The Railway
Truck. The Carpenter's Miter Box. Laying the Track. The First Railway
Accident. Testing the Track.
CHAPTER XXV.
THE CANTILEVER BRIDGE
Frames for the Cantilever Bridge. Erecting the Towers. Setting up the
Frames. Binding and Anchoring the Structure. The Center Panels of the
Bridge. A Serious Interruption. Dispossessed. Farewell to Willow Clump
Island. Reddy's Cantilever Bridge.
[Illustration: Map of Willow Clump Island and Vicinity.]
THE SCIENTIFIC AMERICAN BOY.
CHAPTER I.
"BILL."
"Bill," he was it, the Scientific American Boy, I mean.
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