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THE POPULAR SCIENCE MONTHLY.

ly to have been generally misunderstood. He has been ranked as a superstitious alchemist who stumbled upon some inventions; but more recent investigation has revealed him to be one of the great masters in human progress.

The advance of sound historical judgment seems likely to reverse the positions of the two who bear the name of Bacon. Bacon of the chancellorship and the "Novum Organon" seems to wane. Bacon of the prison-cell and the "Opus Majus" seems to grow brighter.[1]

Roger Bacon's work, as it is now revealed to us, was wonderful. He wrought with power in philosophy and in all sciences, and his knowledge was sound and exact. By him, more than by any other man of the middle ages, was the world put on the most fruitful paths of science—the paths which have led to the most precious inventions. Clocks, lenses, burning specula, telescopes, were given by him to the world, directly or indirectly. In his writings are found formulæ for extracting phosphorus, manganese, and bismuth. It is even claimed that he investigated the power of steam. He seems to have very nearly reached also some of the principal doctrines of modern chemistry. His theory of investigation was even greater than these vast results. In an age when metaphysical subtilizing was alone thought to give the title of scholar, he insisted on real reasoning and the aid of natural science by mathematics. In an age when experimenting was sure to cost a man his reputation and was likely to cost him his life, he insisted on experiment and braved all its risks. Few greater men have lived. As we read the sketch given by Whewell of Bacon's process of reasoning regarding the refraction of light, he seems fairly inspired.

On this man came the brunt of the battle. The most conscientious men of his time thought it their duty to fight him, and they did it too well. It was not that he disbelieved in Christianity, that was never charged against him. His orthodoxy was perfect. He was attacked and condemned, in the words of his opponents, "propter quasdam novitates suspectas."

He was attacked, first of all, with that goodly old missile, which, with the epithets "infidel" and "atheist," has decided the fate of so many battles—the charge of magic and compact with Satan.

He defended himself with a most unfortunate weapon—a weapon which exploded in his hands and injured him more than the enemy, for he argued against the idea of compacts with Satan, and showed that much which is ascribed to demons results from natural means. This added fuel to the flame. To limit the power of Satan was deemed hardly less impious than to limit the power of God.

The most powerful protectors availed him little. His friend Guy

  1. For a very contemptuous statement of Lord Bacon's claim to his position as a philosopher, see Lange, "Geschichte des Materialismus," Leipsic, 1874, vol. i., p. 219. See also Jevons, "Principles of Science," London, 1874, vol. ii., p. 298.