Volume 1

Elements of the theory and practice of chymistry / translated from the French of M. Macquer.

  • Macquer, Pierre Joseph, 1718-1784.
Date:
1787
Catalogue details

Licence: Public Domain Mark

Credit: Elements of the theory and practice of chymistry / translated from the French of M. Macquer. Source: Wellcome Collection.

Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.

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    which have for their bafis either a Volatile Alkali or fome metallic fubftance, are referred,- according to my general Plan, to the head* under which I treat of thofe fubftances. Metallic fubftances are fcarcejy more compound- ed than the faline; which induces me to confider them next. I begin with thofe which are the moft ftmple3 or at lead: feem to be fo ; becaufe their prin- ciples, being very ftrongly conne&ed together, are feparated with the greateft difficulty: fuch are the Metals properly fo called] namely Gold, Silver Copper^ Iron, Tin, and Lead. After thefe come the Semi-metals in order; to wit, Regulus of Anti- mony, Zinc, Bifmuth, and Regulus of Arfenic* Mercury being a doubtful fubftance, which fome Chymifts rank with the Metals, and others with the Semi-metals, becaufe it actually poffefles certain properties in common with each, I have treated of it in a feparate Chapter, which ftands between the Metals and Semi-metals* I next proceed to examine the feveral forts of Oils, whether Vegetable, which are divided into fat, effential, and empyreumatic; or Animal, and Mineral Oils. , By examining thefe fubftances we obtain ideas of all the principles which enter into the compofition of Vegetable and Animal bodies; that is, of thofe fubftances that are capable of fermentation : this enables me to treat of fermentation in general; of its three different degrees or kinds, the fpirituous, acetous, and putrid; and of the produdts of thofe fermentations, ardent fpirits, acids analogous to thofe of vegetables and animals, and volatile alkalis. The order in which I treat of all thofe fubftances being different from that in which they are obtained from compound bodies, I give, in a diftin£t chapter, a general Idea of Chymical Decompofition, with a f ' view