s before inventor of this bolt claims to have remedied the stated, or it can be shut off altogether by turning trum. evils mentioned by passing currents of air through The solutions examined by the author with respect the pipe so that its perforations shall be closed. the flour in the bolt, and… … MADIGAN’S FLOUR BOLT. perature, were ferric chloride, cupric chloride, cupric this apparatus will be greatly increased over that a8 soon as it issues from the bolt. This apparatus sulphate, sulphate of cuprammonium, dichromate of done by the common machines, and be delivered also saves labor in…
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