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afterwards remarked, with true theological acridity, that they were so included because they were ‘such good artists in transubstantiating bread and wine in the Eucharist, and were, therefore, the more likely to be able to effect the transmutation of base metals into better.’ Nothing came of the patents. The practical common-sense of Englishmen never took very kindly to the alchemical delusion, and Chaucer very faithfully describes the contempt with which it was generally regarded. Enthusiasts there were, no doubt, who firmly believed in it, and knaves who made a profit out of it, and dupes who were preyed upon by the knaves; and so it languished on through the sixteenth and seventeenth centuries. It seems at one time to have amused the shrewd intellect of Queen Elizabeth, and at another to have caught the volatile fancy of the second Villiers, Duke of Buckingham. But alchemy was, in the main, the modus vivendi of quacks and cheats, of such impostors as Ben Jonson has drawn so powerfully in his great comedy—a Subtle, a Face, and a Doll Common, who, in the Sir Epicure Mammons of the time, found their appropriate victims. These creatures played on the greed and credulity of their dupes with successful audacity, and excited their imaginations by extravagant promises. Thus, Ben Jonson’s hero runs riot with glowing anticipations of what the alchemical magisterium can effect.

      ‘Do you think I fable with you? I assure you,

       He that has once the flower of the sun,

       The perfect ruby, which we call Elixir, Not only can do that, but, by its virtue, Can confer honour, love, respect, long life; Give safety, valour, yes, and victory, To whom he will. In eight-and-twenty days I’ll make an old man of fourscore a child.... ’Tis the secret Of nature naturized ’gainst all infections, Cures all diseases coming of all causes; A month’s grief in a day, a year’s in twelve, And of what age soever in a month.’

      The English alchemists, however, with a few exceptions, depended for a livelihood chiefly on their sale of magic charms, love-philters, and even more dangerous potions, and on horoscope-casting, and fortune-telling by the hand or by cards. They acted, also, as agents in many a dark intrigue and unlawful project, being generally at the disposal of the highest bidder, and seldom shrinking from any crime.

      The earliest name of note on the roll of the English magicians, necromancers and alchemists is that of

      ROGER BACON.

      This great man has some claim to be considered the father of experimental philosophy, since it was he who first laid down the principles upon which physical investigation should be conducted. Speaking of science, he says, in language far in advance of his times: ‘There are two modes of knowing—by argument and by experiment. Argument winds up a question, but does not lead us to acquiesce in, or feel certain of, the contemplation of truth, unless the truth be proved and confirmed by experience.’ To Experimental Science he ascribed three differentiating characters: ‘First, she tests by experiment the grand conclusions of all other sciences. Next, she discovers, with reference to the ideas connected with other sciences, splendid truths, to which these sciences without assistance are unable to attain. Her third prerogative is, that, unaided by the other sciences, and of herself, she can investigate the secrets of nature.’ These truths, now accepted as trite and self-evident, ranked, in Roger Bacon’s day, as novel and important discoveries.

      He was born at Ilchester, in Somersetshire, in 1214. Of his lineage, parentage, and early education we know nothing, except that he must have been very young when he went to Oxford, for he took orders there before he was twenty. Joining the Franciscan brotherhood, he applied himself to the study of Greek, Latin, Hebrew, and Arabic; but his genius chiefly inclined towards the pursuit of the natural sciences, in which he obtained such a mastery that his contemporaries accorded to him the flattering title of ‘The Admirable Doctor.’ His lectures gathered round him a crowd of admiring disciples; until the boldness of their speculations aroused the suspicion of the ecclesiastical authorities, and in 1257 they were prohibited by the General of his Order. Then Pope Innocent IV. interfered, interdicting him from the publication of his writings, and placing him under close supervision. He remained in this state of tutelage until Clement IV., a man of more liberal views, assumed the triple tiara, who not only released him from his irksome restraints, but desired him to compose a treatise on the sciences. This was the origin of Bacon’s ‘Opus Majus,’ ‘Opus Minus’ and ‘Opus Tertius,’ which he completed in a year and a half, and despatched to Rome. In 1267 he was allowed to return to Oxford, where he wrote his ‘Compendium Studii Philosophiæ.’ His vigorous advocacy of new methods of scientific investigation, or, perhaps, his unsparing exposure of the ignorance and vices of the monks and the clergy, again brought down upon him the heavy arm of the ecclesiastical tyranny. His works were condemned by the General of his Order, and in 1278, during the pontificate of Nicholas III., he was thrown into prison, where he was detained for several years. It is said that he was not released until 1292, the year in which he published his latest production, the ‘Compendium Studii Theologiæ.’ Two years afterwards he died.

In many respects Bacon was greatly in advance of his contemporaries, but his general repute ignores his real and important services to philosophy, and builds up a glittering fabric upon mechanical discoveries and inventions to which, it is to be feared, he cannot lay claim. As Professor Adamson puts it, he certainly describes a method of constructing a telescope, but not so as to justify the conclusion that he himself was in possession of that instrument. The invention of gunpowder has been attributed to him on the strength of a passage in one of his works, which, if fairly interpreted, disposes at once of the pretension; besides, it was already known to the Arabs. Burning-glasses were in common use; and there is no proof that he made spectacles, although he was probably acquainted with the principle of their construction. It is not to be denied, however, that in his interesting treatise on ‘The Secrets of Nature and Art,’2 he exhibits every sign of a far-seeing and lively intelligence, and foreshadows the possibility of some of our great modern inventions. But, like so many master-minds of the Middle Ages, he was unable wholly to resist the fascinations of alchemy and astrology. He believed that various parts of the human body were influenced by the stars, and that the mind was thus stimulated to particular acts, without any relaxation or interruption of free will. His ‘Mirror of Alchemy,’ of which a translation into French was executed by ‘a Gentleman of Dauphiné,’ and printed in 1507, absolutely bristles with crude and unfounded theories—as, for instance, that Nature, in the formation of metallic veins, tends constantly to the production of gold, but is impeded by various accidents, and in this way creates metals in which impurities mingle with the fundamental substances. The main elements, he says, are quicksilver and sulphur; and from these all metals and minerals are compounded. Gold he describes as a perfect metal, produced from a pure, fixed, clear, and red quicksilver; and from a sulphur also pure, fixed, and red, not incandescent and unalloyed. Iron is unclean and imperfect, because engendered of a quicksilver which is impure, too much congealed, earthy, incandescent, white and red, and of a similar variety of sulphur. The ‘stone,’ or substance, by which the transmutation of the imperfect into the perfect metals was to be effected must be made, in the main, he said, of sulphur and mercury.

      It is not easy to determine how soon an atmosphere of legend gathered around the figure of ‘the Admirable Doctor;’ but undoubtedly it originated quite as much in his astrological errors as in his scientific experiments. Some of the myths of which he is the traditional hero belong to a very much earlier period, as, for instance, that of his Brazen Head, which appears in the old romance of ‘Valentine and Orson,’ as well as in the history of Albertus Magnus. Gower, too, in his ‘Confessio Amantis,’ relates how a Brazen Head was fabricated by Bishop Grosseteste. It was customary in those days to ascribe all kinds of marvels to men who obtained a repute for exceptional learning, and Bishop Grosseteste’s Brazen Head was as purely a fiction as Roger Bacon’s. This is Gower’s account:

      ‘For of the gretè clerk Grostest

       I rede how busy that he was

       Upon the clergie an head of brass

       To forgè; and make it fortelle

       Of suchè thingès as befelle.

       And seven yerès besinesse

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