[Sidenote: Minor alchemists of England, France, and Germany.] A number of less conspicuous though not unknown names succeed to Bacon. There is Raymond Lully, who was said to have been shut up in the Tower of London and compelled to make gold for Edward II.; Guidon de Montanor, the inventor of the philosopher's balm; Clopinel, the author of the "Romance of the Rose;" Richard the Englishman, who makes the sensible remark that he who does not join theory to practice is like an ass eating hay and not reflecting on what he is doing; Master Ortholan, who describes very prettily the making of nitric acid, and approaches to the preparation of absolute alcohol under the title of the quintessence of wine; Bernard de Treves, who obtained much reputation for the love-philters he prepared for Charles V. of France, their efficacy having been ascertained by experiments made on servant-girls; Bartholomew, the Englishman who first described the method of crystallizing and purifying sugar; Eck de Sulzbach, who teaches how metallic crystallizations, such as the tree of Diana, a beautiful silvery vegetation, may be produced. He proved experimentally that metals, when they oxidize, increase in weight; and says that in the month of November, A.D. 1489, he found that six pounds of an amalgam of silver heated for eight days augmented in weight three pounds. The number is, of course, erroneous, but his explanation is very surprising. "This augmentation of weight comes from this, that a spirit is united with the metal; and what proves it is that this artificial cinnabar, submitted to distillation, disengages that spirit." He was within a hair's-breadth of anticipating Priestley and Lavoisier by three hundred years. [Sidenote: Augurelli, the poetical alchemist.] The alchemists of the sixteenth century not only occupied themselves with experiment; some of them, as Augurelli, aspired to poetry. He undertook to describe in Latin verses the art of making gold. His book, entitled "Chrysopoeia," was dedicated to Leo X., a fact which shows the existence of a greater public liberality of sentiment than heretofore. It is said that the author expected the Holy Father to make him a handsome recompense, but the good-natured pope merely sent him a large empty sack, saying that he who knew how to make gold so admirably only needed a purse to put it in.