Among the works written by Nicholas Flamel on the subject of alchymy is _The Philosophic Summary_, a poem, reprinted in 1735, as an appendix to the third volume of the _Roman de la Rose_. He also wrote three treatises upon natural philosophy, and an alchymic allegory, entitled _Le Désir désiré_. Specimens of his writing, and a fac-simile of the drawings in his book of Abraham, may be seen in Salmon's _Bibliothèque des Philosophes Chimiques_. The writer of the article _Flamel_ in the _Biographie Universelle_ says, that for a hundred years after the death of Flamel, many of the adepts believed that he was still alive, and that he would live for upwards of six hundred years. The house he formerly occupied, at the corner of the Rue de Marivaux, has been often taken by credulous speculators, and ransacked from top to bottom, in the hopes that gold might be found. A report was current in Paris, not long previous to the year 1816, that some lodgers had found in the cellars several jars filled with a dark-coloured ponderous matter. Upon the strength of the rumour, a believer in all the wondrous tales told of Nicholas Flamel bought the house, and nearly pulled it to pieces in ransacking the walls and wainscoting for hidden gold. He got nothing for his pains, however, and had a heavy bill to pay to restore his dilapidations.
While alchymy was thus cultivated on the continent of Europe, it was not neglected in the isles of Britain. Since the time of Roger Bacon, it had fascinated the imagination of many ardent men in England. In the year 1404 an act of parliament was passed declaring the making of gold and silver to be felony. Great alarm was felt at that time lest any alchymist should succeed in his projects, and perhaps bring ruin upon the state by furnishing boundless wealth to some designing tyrant, who would make use of it to enslave his country. This alarm appears to have soon subsided; for, in the year 1455, King Henry VI., by advice of his council and parliament, granted four successive patents and commissions to several knights, citizens of London, chemists, monks, mass-priests, and others, to find out the philosopher's stone and elixir, "to the great benefit," said the patent, "of the realm, and the enabling of the king to pay all the debts of the crown in real gold and silver." Prinn, in his _Aurum Reginæ_, observes, as a note to this passage, that the king's reason for granting this patent to ecclesiastics was, that "they were such good artists in transubstantiating bread and wine in the eucharist, and therefore the more likely to be able to effect the transmutation of baser metals into better." No gold, of course, was ever made; and next year the king, doubting very much of the practicability of the thing, took further advice, and appointed a commission of ten learned men and persons of eminence to judge and certify to him whether the transmutation of metals were a thing practicable or no. It does not appear whether the commission ever made any report upon the subject.