BERNARD AND A. L. DE JUSSIEU 351 



which can properly be called by such names as these, 

 were questions that could only be seriously attacked in 

 the middle of the nineteenth century. 



BERNARD DE JUSSIEU 

 1699-1777 



ANTOINE LAURENT DE JUSSIEU 

 1748-1836 



A. L. de Jussieu. Exainen de la Famille des Benoncules. M^m. Acad. Soi. , 

 1773, pp. 214-240 (pub. 1777). 



Exposition d'un nouvel ordre de Plantes. Mem. Acad. Sci., 1774, pp. 



175-197 (pub. 1778). 



Genera Plantarum secundum Ordines Naturales disposita. 8vo. 



Paris. 1789. 



Five Jussieus are known to botanical history, and 

 two of the five were among the first naturalists of their 

 age.^ The founder of this botanical succession was 

 Antoine de Jussieu (1686-1758), a pupil of Tournefort 

 and professor at the Jardin du Roi. 



Bernard de Jussieu, younger brother of Antoine, 

 showed more original power than any other of the five. 

 He was able to extend Trembley's discovery of the 

 branching animal, Hydra, by producing examples of 

 permanent animal-colonies (Alcyonium,Tubipora,Flustra, 

 Cellepora), all of which he had examined on the coast of 

 Normandy ; he was one of the first to pronounce that 

 corals are animals and not plants ; and he devised an 

 arrangement of the plants in the botanic garden of the 

 Petit Trianon at Versailles, which is reckoned as an 

 epoch in the history of botany. He was remarkable for 



1 The eight Bernouillis, all mathematicians, and the four Cassinis, who one 

 after another superintended the Paris Observatory, furnish parallel cases of 

 hereditary scientific genius. 



