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Updated: May 18, 2025
Close to the door where I was standing a pipe came down to the floor. It struck me at once that this was a ventilating-pipe. I bent down and put my hand over the opening; there was not so much as a hint of air to be felt. So this was the cause of the bad atmosphere. The next things that caught my eye were the bunks nine of them: three on the right hand and six on the left.
There is said to result a good ventilation, with economy of gas, an increased steadiness of the flame and power of light. A better arrangement is a third pipe enclosing the gas-pipe and enclosed in the ventilating-pipe, opening to the air, instead of the holes in the globe, which in this case should be air-tight.
This plan is said to have reached its perfection when the three pipes are filled with wire gauze to some extent. This, being heated by the escape of hot gases in the ventilating-pipe, sends both the air and the gas to the flame already highly heated. The result is said to be admirable as regards ventilation, steadiness and power of the light and economy of gas.
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