APPENDIX. 373 



de Jussieu arranged the plants according to his own 

 ideas, but he never published anything which could give 

 a key to this arrangement, and those botanists who came 

 to Trianon to study his learned enigma were never 

 enabled to solve it. Bernard died blind, leaving to his 

 nephew Laurent the results of his studies. 



Laurent de Jussieu, who was born at Lyons in 1748, 

 and died at Paris in 1836, was worthy of such a heritage. 

 At the age of seventeen he began his studies under his 

 uncle, and at the age of thirty he entered the Academy 

 of Sciences. Having at the same time been named 

 assistant to Lemonnier, professor of botany in the Jardin 

 du Roi, he began to reform the arrangement of the 

 school of botany, and to apply to it his own and his 

 uncle's ideas in reference to the natural method. For 

 thirty years he continued to develop these views, and 

 when in 1778 he began the publication of the Genera 

 Plantarum, which was terminated in 1789, the science of 

 botany was definitely established. Notwithstanding the 

 difficulties which the new method presented in certain 

 respects, and notwithstanding the convenience of the 

 Linnaean system, and the great name of its author, the 

 ideas of Jussieu prevailed, and are now universally 

 adopted. They have, moreover, extended their influence 

 to all the other branches of the natural sciences, and 

 with respect to zoology more particularly it may be said 

 that in certain respects Cuvier was merely the follower of 

 Jussieu. He rendered another great service to the natural 

 sciences by founding the library of the Museum, which 

 is now so rich in standard works. In 1826 this illus- 

 trious botanist became blind like his uncle, and resigned 

 his professorship to his son Adrien. This last scion of 

 the family, who was a member of the Institute, was born 

 at Paris in 1798, and died in same city in 1853. From 

 his earliest youth, Adrien had given proofs that the 



