Experiments upon Magnesia Alba, Quick-Lime, and other Alcaline Substances Quotes
Chemistry books, History of chemistry
Top Quotes
“Black, Joseph”
“Phlogiston theory”
“History of chemistry”
“Scientific Revolution”
“This treatise... can be considered as the first quantitative study in chemistry.”
“By the following experiments, I proposed to know whether this substance could be reduced to a quick-lime.”
“This supposition was founded upon an observation of the most frequent consequences of combining bodies in chemistry.”
“That part of the dried powder which does not dissolve in spirit of vitriol, consists of the lime separated from the water.”
“Quick-lime... is... rendered mild by magnesia, if these two are well rubbed together, and infused with a small quantity of water.”
“The present reprint is a faithful copy of the Paper as it first appeared in 1756, the spelling &c., of the original having been carefully reproduced.”
“[M]agnesia was exposed in a crucible, for about an hour, to such a heat as is sufficient to melt copper. When taken out, it weighed 7/12 of its former weight.”
“Observing magnesia to lose such a remarkable proportion of its weight in the fire, my next attempts were directed to the investigation of this volatile part...”
“Finally VI completes the caustifying of the alkali by the action of magnesia [usta].”
“These considerations led me to try a few experiments, whereby I might know what quantity of air is expelled from an alkali, or from magnesia, by acids.”
“[I]t is evident, that, of the volatile parts contained in that powder, a small proportion only is water; the rest cannot, it seems, be retained in vessels, under a visible form.”
“Black discusses... results using a table for affinities or "elective attractions" of alkaline substances and fixed air.”
“Google Books
• Experiments Upon Magnesia Alba, Quicklime, and Some Other Alcaline Substances (1755) Alembic Club Reprint (1906) No. 1.”
“In all essentials, Black's explanation is identical with our own, and the careful logic of his procedure makes his monograph conspicuous at once among the multitude of useful researches which were now beginning to bear witness to the new spirit in chemistry.”
“The Paper constitutes a highly important step in the laying of the foundations of chemistry as an exact science, and furnishes a model of carefully planned experimental investigation, and of clear reasoning upon the results of experiment.”