Gage, Alfred P. (Alfred Payson), 1836-1903, Fessenden, C · Toronto : W.J. Gage · leaf 63
n hight, whenthe hydrogen jar is heldover the porous cup. Children well understand that toy-balloons,which are made of collodion and filled withcoal-gas, collapse in a few hours after they arcinflated. What is the cause? Nature furnishesan illustration of osmose of gases in respira-tion. In the…
Physics
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