inc is chosen which is fabric exerts a pressure and forces the liquid through the on. Durand, among others, has maintained that the pres- free from defects. In order to cleanse it thoroughly it is ence of pyrites in the coal is a principal cause of this trouble; sides and bottom of the inner cone,… … that of the coal rose very quickly, until, after and developed with the addition of a liquid TEXTILE FILTEE, COFFEE POT, AND URN. a few hours, ignition took place. Two other containing 5 per cent of acetic acid. To samples of coal and pyrites were then put facilitate the inking, it is well to apply…
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