ase is effected. at 53d street; and here also is used the new switch appar Vinegars are sometimes adulterated with sulphuric and atus, which forms the third and last portion of our subject. other mineral acids, which may be detected as follows : The Fig. 5 shows the interior of the switch house… … It is then cooled, diluted, and a few drops of iodine tincture placed and locked, nor can the latter be altered after the sig- dropped in. With pure vinegar, the blue color of iodide of nal is set. Any combination of interlocking is possible: in starch should show itself; if no coloration ensues, a…
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