313240214-Elements-of-Chemistry-Lavoisier_0047.pdf - The Project Gutenberg eBook of Elements of Chemistry by Mr Lavoisier quantities.\u2014A[17 This

313240214-Elements-of-Chemistry-Lavoisier_0047.pdf - The...

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08/08/2015 The Project Gutenberg eBook of Elements of Chemistry, by Mr Lavoisier. 47/229 quantities.—A. This expression Hydrogen has been very severely criticised by some, who pretend that it signifies engendered by water, and not that which engenders water. The experiments related in this chapter prove, that, when water is decomposed, hydrogen is produced, and that, when hydrogen is combined with oxygen, water is produced: So that we may say, with equal truth, that water is produced from hydrogen, or hydrogen is produced from water.—A. See the nature of these salts in the second part of this book.—A. By potash is here meant, pure or caustic alkali, deprived of carbonic acid by means of quick­lime: In general, we may observe here, that all the alkalies and earths must invariably be considered as in their pure or caustic state, unless otherwise expressed.—E. The method of obtaining this pure alkali of potash will be given in the sequel.—A. See the third part of this work.—A. See an account of this apparatus in the third part of this work.—A.
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