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Page 109
Steel or copper sheets threeeighths inch in thickness can be welded at the rate of five feet per hour , the cost being six cents per inch . Sheets oneeighth of an inch thick can be welded at the rate of ten feet per hour ...
Steel or copper sheets threeeighths inch in thickness can be welded at the rate of five feet per hour , the cost being six cents per inch . Sheets oneeighth of an inch thick can be welded at the rate of ten feet per hour ...
Page 270
When Orville Wright descended , as lightly and gracefully as a bird , after making his flight of over an hour on the evening of Sept. 9 , there was no apparent reason why he should not have been able to stay up for an hour longer ...
When Orville Wright descended , as lightly and gracefully as a bird , after making his flight of over an hour on the evening of Sept. 9 , there was no apparent reason why he should not have been able to stay up for an hour longer ...
Page 273
It was demanded that the machine should make an " endurance flight " of one hour ; that it should have a speed of forty miles an hour in still air ; that it should be able to carry sufficient fuel for a flight of one hundred and twenty ...
It was demanded that the machine should make an " endurance flight " of one hour ; that it should have a speed of forty miles an hour in still air ; that it should be able to carry sufficient fuel for a flight of one hundred and twenty ...
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Contents
Tapping the Gunnison Canyon | 18 |
How the Blood Defends the Body | 24 |
Sea Will Succor a Famished | 32 |
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