of Champollion caught the suggestion, and at once putting it to the test and amplifying it until he had completed an alphabet, found true what Young had only surmised. Since, according to the old adage, which rules the scientific world, that "he only discovers who first proves," Champollion shares with Young the honor of making one of the most important discoveries of this century.
July 19, 1830, is the date of the sitting of the Academy of Sciences when the rupture between Cuvier and Geoffroy de SaintHilaire took place. It was a battle of giants. Although Paris was in commotion—for it was in the midst of the Revolution of July—the Academy was filled with French scientists. These lifelong friends had for some years a growing difference, which from its very nature was irreconcilable, upon the comparative merits of the synthetic and the analytical methods of studying nature, and which finally resulted in the tempestuous debate in the Academy. Geoffroy, as a synthesist, maintained that organic forms are built on one plan of construction, of the same elements, of the same number, and of the same relation between organs; while, on the other hand, changed conditions varied the size and use of organs, but not the plan, and that species have undergone modifications in the change of time. Cuvier, as an analyst, could see no evidence of variability in species, and held that every organ was specially created for the purpose for which it was used. The echoes of this combat are still resounding throughout the scientific world, but with more and more unequaled result.
Geoffroy was one of Napoleon's scientific staff in Egypt, and for his firm stand, at the surrender of Alexandria, in resisting the claims of the English general to the rich collection, was honored upon his return with decorations by the emperor, and an election to the Academy of Sciences. In 1795 Geoffroy was put in correspondence with a youth in Normandy, who was devoting himself to natural history, and was so impressed with the originality of the young man's manuscripts that he invited him to Paris with the rather enthusiastic, but, as it proved, prophetic words, "Venez jouer parmi nous le rôle de Linné, d'un autre législature de l'histoire naturelle."
Georges Cuvier, to whom these words were addressed, came to Paris, entered Geoffroy's household, and wrote with Geoffroy many joint papers. It is to the credit of both men that the lifelong friendship, which was for a time broken by the debate of 1830, was renewed and continued to death.
The undoubted genius of Cuvier was early recognized; for when, in 1795, the Institute was reorganized, he was elected a member of the Section on Zoölogy. This confidence was well founded, for his work was truly epochal, and to this day the
