not possessed by others, in which there must be investigated the source of the arsenic which occurs in} The apparatus is allowed to stand for a few minutes, the sulphuric acid of commerce. In conjunction with | the funnel tube is adjusted if necessary, and the read- duplicate machinery for each bed… … the machine engage with the stem, being allowed to stand before final adjustment, and a IMPROVED RAIL LOADING MACHINE. cog wheel on the shaft. Power is applied to the shaft and mo- second reading is taken. This tion consequently imparted to the chain. As the rails researches on the valuation of…
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