194 Miscellanies. 
made in the day tite, and that the result might be different in ie 
night, the following trials were made. 
Plants of Euphorbia, Mercurialis, Senecio, Séhicknsy and Cabten 
were placed, in the morning, in a large vase into which chloride of 
lime was introduced. The roots of the plants were immersed out- 
side the vase. The quantity of chlorine disengaged was far from be- 
ing sufficient to affect the vegetable tissue. In the evening the plants 
had not suffered, and the odor of the chlorine was natural. » The 
same plants, without any addition whatever to the chlorine, were call 
faded the next morning, after having passed the night in.the chlo- 
rine, except the cabbage, which had resisted its action. The odor 
of the chlorine had disappeared, and in the room of it, a disagreeable 
acid odor was manifest. The experiment was several times repeat- 
ed, with an increased quantity of chlorine, and with the same result ; 
and the plants which during the day supported a strong atmosphere 
of chlorine, were always withered in the night by a smaller dose. 
* Nrrric Actp.—With the vapor of nitric acid, introduced in the 
evening, the plants were found witliered in the morning, some of the 
leaves being browned by the action of the acid. When the experi- 
ment was commenced in the morning, although some of the —_— 
were browned, the others were not withere 
Nitrous acid gas.—Appeared to be a vielent poison to pial 
and killed them in the night by very small doses. Nevertheless, by 
day they were not “sensibly altered, though the disengagement of gas 
was abundant. 
Sulphuretted hydrogen.—The same result precisely.» Plants left 
in it daring: the night were all withered in the morning, although t they 
were not in the least altered im the light. 
Muriatie acid gas.—The same results. The plants do not perish 
by day, even when there is gas enough to brown one or two of the 
leaves. ‘They are entirely dead in the morning, leaving the peo 
odor before mentioned. Cabbage is still an exception. 
~ It appears then, that several gases are injurious to vegetation, bot 
that their action is exerted only in the absence of light; as M. 
ee _ foreseen —Idem. : 
5. "Oe the Distillation of Bread.—F nding it announced in the 
English Journals, that alcohol is distilled from bread during the bak- 
ing, and may be collected by condensing the vapor, M. Lees 
and B. Moyeuse were induced to repeat the experiment. Having 
