it will be observed circuit are very remote, and if any such interrup- Strengthening Breakwaters. that the motor is embraced by the back wheel. Thus tions should occur they may be easily located. An ingenious method of strengthening breakwaters the engine is placed in direct communication with the… … ing at full power so long as any petrol remains. of safety. The huge doors then swing open, and At the bottom of the carbureter is a small tap, the 120 tons of concrete sink to the bottom. The C, by means of which it may be emptied. This not Fig 1. -INTERIOR OF BACK WHEEL, SHOWING MOTOR. vessel,…
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