lavoisier, by heating mercury to a high temperature in a close vessel containing air, found that the mercury increased in weight and became what was then called red precipitate, while the air, on being examined after the experiment, proved to have lost weight, and to have become incapable of supporting life or combustion.
"A System Of Logic, Ratiocinative And Inductive (Vol. 1 of 2)"
John Stuart Mill
lavoisier placed some guinea-pigs in a box filled with ice, measured the quantity of heat thrown off, the quantity of oxygen consumed, the quantity of carbonic acid produced; and he was thus able to deduce a fundamental law of life, viz.
"The Pros and Cons of Vivisection"
Charles Richet Commentator: W. D. Halliburton
He made experiments on himself also; but however great one's respect for the life of a guinea-pig may be, must it be considered wrong that lavoisier should have experimented on the guinea-pig before experimenting on himself?
"The Pros and Cons of Vivisection"
Charles Richet Commentator: W. D. Halliburton