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Scientific American, Vol. 33, No. 6 (August 1875) (1875)
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method is that in which the venti- considerable period, so that the news of her death, which oc- lation is done by mechanical means. The tunnel being Coal ashes, sifted veiy finely,thoroughly ground,and mixed curred on the 18th of July, is not unexpected. nothing more or less than a walled chamber,… … IMPROVEMENT IK THE VEKTILATIOK OF BAILWAT TUKITELS. © 1875 SCIENTIFIC AMERICAN, INC.Patents · Improved · Drill · Boiler · Ether · Iron · Patent law · Scientific American · Pound sinker · Patent office · Cutting edges · Wrought iron · Trade mark · Small quantity · Tin foil · Lord chancellor
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