owish spot of lead iodide.Kopp moistens the leaf to be ex-amined with sulphuric acid. Ifthe tin is pure the spot remainswhite, but if lead is present thereis formed a black spot. Tannin Soap. Cocoa-nut oil, 18 lb.; Solutionof soda (88 B.), 9 lb.; Tannicacid, % lb.; Alcohol, q.s.; Bal-sam of Peru, 1… … Eruptions of ^ulpliureted Hydrogen. A very peculiar phenomenon was observed last Decemberin Missolonghi. On the night of the 15th of December theinhabitants were terrified by the sudden odor of sulphydricacid gas, which was so intense as to interfere with respira-tion. The next morning the sea was…
