The burning-glass concentrating the sun's rays on the red precipitate, being Priestley's original experiment.
Priestley was librarian when, in 1774, he discovered oxygen.
Right there, "the nature of the flame," is one thing Priestley did explain in America.
There is a sense in which it is entirely proper to say that Priestley was not a literary man.
The apparatus used by Priestley, in his experiments on different kinds of air, is represented in Fig.
Priestley says that the only person who took ‘much interest’ was Mr. Hey, a surgeon.
Dr. Priestley's reply to this question appears to us to be a mere evasion of the difficulty.
We can afford to be as philosophic over the matter as Priestley was.
The language employed by Dr. Priestley carries us back to the time when chemistry was beginning to emerge from alchemy.
Priestley missed seeing Vice-president John Adams by one day.
British chemist who discovered oxygen (1774) and 10 other gases, including hydrogen chloride, sulphur dioxide, and ammonia.
Our Living Language : Raised a strict Calvinist, Joseph Priestley originally hoped to become a minister, but his exposure to and interest in more liberal theological and philosophical issues ultimately led him to the calling of science. When Priestley met Benjamin Franklin in 1766, Franklin's enthusiasm for experimentation with electricity inspired Priestley to conduct his own experiments. One of Priestley's first discoveries was that graphite conducts electricity. Intrigued by the quality of the air emitted by fermentation at a nearby brewery, he later developed an improved technique for isolating and storing gases—at the time understood as varieties of air—in sealed glass vessels. Priestley also noted that the "damage" done to air by the respiration of animals, which slowly rendered it less and less life-sustaining for animals, was reversed by the respiration of plants. Using a magnifying glass to focus the Sun's rays on a piece of mercuric oxide and capturing the emitted gas, he discovered that this gas made a candle burn more brightly and could keep a mouse alive while all the other gases he tested extinguished the candle's flame and killed the mice. Priestley did not appreciate the full implications of his discovery, however. After he discussed his results with the French chemist Antoine Lavoisier, Lavoisier repeated Priestley's experiments, showing that combustion required the presence of Priestley's gas and implied that air was not an element but was made up of various parts. Lavoisier named the gas oxygen, and the modern theory of combustion was born.