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Updated: May 29, 2025
There was the beautiful Emma Baeyer, the daughter of General Baeyer, who afterward conducted the measuring of the meridian for central Europe; pretty, lively Anna Bisting; and Gretchen Bugler, a handsome, merry girl, who afterward married Paul Heyse and died young; Clara and Agnes Mitscherlich, the daughters of the celebrated chemist, the younger of whom was especially dear to my childish heart.
A liter of dried cacao beans weighs 630 grains; of picked and roasted, 610 grains. In 1727 a hurricane destroyed at a single blast the important cacao plantation of Martinique, which had been created by long years of extraordinary care. The same thing happened at Trinidad. Mitscherlich.
The first reaction produced by taking nitrate of silver internally is a combination of this salt with the proteinaceous tissues with which it comes in contact, as also a precipitation of chloride of silver. According to Mitscherlich, the combination with the proteine or albuminous substance is not a permanent one, but suffers a decomposition by various acids, as dilute acetic and lactic acid.
And so as soon as the claims of Dulong and Petit and of Mitscherlich had been substantiated by other observers, the laws of the specific heat of atoms, and of isomorphism, took their place as new levers of chemical science. With the aid of these new tools an impregnable breastwork of facts was soon piled about the atomic theory.
There was the beautiful Emma Baeyer, the daughter of General Baeyer, who afterward conducted the measuring of the meridian for central Europe; pretty, lively Anna Bisting; and Gretchen Bugler, a handsome, merry girl, who afterward married Paul Heyse and died young; Clara and Agnes Mitscherlich, the daughters of the celebrated chemist, the younger of whom was especially dear to my childish heart.
The isolation of aniline from coal-tar is expensive, in consequence of the small quantities in which it is there found, but it was discovered by Mitscherlich that by acting upon benzene, one of the early distillates of coal-tar, for the production of nitro-benzole, a compound was produced from which aniline could be obtained in large quantities.
"He is a learned man," said old Parson Emmons of Franklin, "who understands one subject, and he is a very learned man who understands two subjects." Schonbein says he has been studying oxygen for thirty years. Mitscherlich said it took fourteen years to establish a new fact in chemistry.
Mitscherlich speaks of erosion of the gums and tongue with hemorrhage at the slightest provocation, following the long administration of dilute nitric acid. This was possibly due to the local action. According to Taylor, the smallest quantity of oxalic acid causing death is one dram. Ellis describes a woman of fifty who swallowed an ounce of oxalic acid in beer.
In the same year Eilhard Mitscherlich, a German investigator, observed that compounds having the same number of atoms to the molecule are disposed to form the same angles of crystallization a property which he called isomorphism.
C. Scherzer, in his work on Central America, gives the cacao-tree an existence of twenty years, and says that each tree annually produces from 15 to 20 ounces of cacao. 1,000 plants will produce 1,250 lbs. of cacao, worth $250; so that the annual produce of a single tree is worth a quarter of a dollar. Mitscherlich says that from 4 to 6 lbs. of raw beans is an average produce.
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