. The American journal of science and arts. It is known that some tri-als, made within a few years, of the air over the Baltic Sea, have fur-nished very curious results which it would be interesting to follow up. But in a variety of other circumstances such researches may bevery useful. I have endeavored to subject our autumnal fog, the pe-culiar odor of which is known to all, to the action of several rea-gents. I have passed air, loaded with this fog, through nitrate of sil-ver, and chloride of silver dissolved in caustic ammonia. Nothingpositive was obtained. In the last case a precipitate w
. The American journal of science and arts. It is known that some tri-als, made within a few years, of the air over the Baltic Sea, have fur-nished very curious results which it would be interesting to follow up. But in a variety of other circumstances such researches may bevery useful. I have endeavored to subject our autumnal fog, the pe-culiar odor of which is known to all, to the action of several rea-gents. I have passed air, loaded with this fog, through nitrate of sil-ver, and chloride of silver dissolved in caustic ammonia. Nothingpositive was obtained. In the last case a precipitate was producedwhich speedily assumed the color of chloride of silver exposed forsome time to the light, and which was found to be in reality that salt,doubtless precipitated from its ammoniacal solution by the carbonicacid introduced with the atmosphere. I advert to these incomplete trials only to suggest methods whichI think may be followed in investigations of this nature.—Bib. , 1832. Berne, March 27th, 1832. Fiff. 1. Fig. 2. A. Fig. 3.
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