or gasoline. break. expansion from 32° to 212° Fahrenheit amounts to three- The body, a, of the heater is made of sheet metal, and has T have recently been using, with better results, a mixture eighths of its bulk at 32°, it follows that every degree on flaring sides and a broad base. In one site… … each dry before putting on the next. . bars. The cylinder is in this manner held in a vertical posi- There is no doubt that the same mass can be used to cover WEBSTER’S IMPROVED WATER HEATER, tion, while it is free to move by the expansion and contrac- gas retorts, furnaces, stoves, and walls, just…
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