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By the late eighteenth century, scientists had discovered certain types of gas, such as 'fixed air' (carbon dioxide), but their composition was little understood. Relatively few investigations into gases had taken place, and so the polymath Joseph Priestley (1733–1804) was able to make major breakthroughs in the field using a range of experimental techniques. While living near a brewery, he found that it was possible to outline the shape of the gas above fermenting beer with smoke, and that fire would burn with varying strength depending on the composition of the air. This three-volume collection first appeared between 1774 and 1777. Following the international interest and new discoveries prompted by the publication of its predecessor, Volume 2 - reissued here in its corrected 1776 second edition - includes accounts of further experiments, Priestley's paper on the conducting power of charcoal, and, most significantly, notes on what he calls 'dephlogisticated air' (oxygen).

When this work first appeared in 1767, electricity was seen as such a minor aspect of natural philosophy that its investigation was not considered a priority for contemporary scientists. The polymath Joseph Priestley (1733–1804) was one of the few who devoted serious effort to advancing the field. Here he charts the history of electrical study from experiments with amber in ancient Greece to the most recent discoveries. The book comprises explanations of the principal theories of electricity - both historical and contemporary - in addition to a selection of well-known experiments carried out by previous researchers. Priestley also details his own experiments, covering such topics as the colour of electric light, the effects of temperature, and even the musical tone of electrical discharges. One of his most successful works, testifying to the clarity of his explanations, the book remains an important text in the history of science.

No abstract

By the late eighteenth century, scientists had discovered certain types of gas, such as 'fixed air' (carbon dioxide), but their composition was little understood. Relatively few investigations into gases had taken place, and so the polymath Joseph Priestley (1733–1804) was able to make major breakthroughs in the field using a range of experimental techniques. While living near a brewery, he found that it was possible to outline the shape of the gas above fermenting beer with smoke, and that fire would burn with varying strength depending on the composition of the air. This three-volume collection first appeared between 1774 and 1777. Primarily an account of Priestley's early experiments, with details of apparatus including candles and live mice, Volume 1 is reissued here in its corrected 1775 second edition and also incorporates a brief history of the field of inquiry.