350 



Simon L'Huillier, for many years Professor of Mathematics at 

 Geneva, was born in that city on the S^th of April, 1750. The rapid 

 progress which he made in his collegiate studies was viewed with so 

 much interest by one of his relations, a minister of the reformed 

 church of Geneva, that he bequeathed him a large portion of his 

 fortune, on the express condition that he would embrace the cleri- 

 cal profession : but young I'Huillier, feeling no inclination to the 

 studies which this condition would have imposed upon him, resisted 

 the temptation, and preferred devoting himself to the pursuits of 

 abstract science. The spirit of independence evinced by this sacri- 

 fice, together with the extraordinary aptitude he displayed for mathe- 

 matical acquirements, excited the interest and conciliated the affec- 

 tion of another of his relations, the celebrated Le Sage, by whose 

 instructions and counsels the most salutary influence was exercised 

 over the studies of his pupil. Bertrand, who then occupied the 

 chair of Mathematics in the same college, was also one of those who 

 discerned in I'Huillier the dawn of genius ; and even at that early 

 period he regarded him as destined to be his successor in that pro- 

 fessorship. 



As I'Huillier advanced to manhood, it became necessary for him 

 to engage in some active employment, in which he could turn to 

 account his academical attainments. He had the good fortune, at 

 this critical time of his life, to be chosen tutor to Prince Czarto- 

 rynski, with whom he remained for a period of thirteen or fourteen 

 years ; ever honoured with the friendship and respect of all the mem- 

 bers of the Prince's family. He dedicated to the father of his pupil 

 his first work, which was published at Warsaw in 1782, under the 

 title of De relatione mutud capacitatis et terminorum Jigurarum, 



juxta methodi naturalis normas digesta : partes I. — IV. 8vo. Parisiis, 1824 

 —1830. 



5. M^moire sur la famille des Legumineuses ; 4to. Paris, 1825. 



6. Plantes rares du Jardin de Geneve ; livraisons I. — III. ; 4to. Geneve, 

 1826. 



7. Organographie Vegetale, ou Description raisonnee des plantes ; 2 vols. 

 8vo. Paris, 1827. (This work has been translated into German by Meissner, 

 in 1828.) 



8. Collection de memoires pour servir a I'histoire du Regne Vegetal : 1°. 

 Memoire sur la famille de Melastomacees ; 2°. Memoire sur la famille des 

 Crassulacees : 2 vols. 4to. Paris, 1828. 



9. Memoire sur la famille des Ombelliferes ; 4to. Paris, 1829. 



10. Memoire sur la famille des Onagraires ; 4to. Paris, 1829. 



11. Memoire sur la famille des Lorantliacees ; 4to. Paris, 1830. 



12. Memoire sur la famille des Valerianees; 4to. Paris, 1832. 



13. Cours de Botanique ; seconde partie. Physiologie Vegetale pour 

 servir de suite a I'Organographie Vegetale, et d'introduction a la Botanique 

 Geographique et Agricole; vol. i. — iii. ; 8vo. Paris, 1832. 



De Candolle was also the author of an essay on Geographical Botany, 

 prefixed to the second volume of the 'Flore Fran9ais6' (1805). — Of the 

 article "Geographic botanique et agricole," in the ' Dictionnaire d'Agri- 

 culture,' published in 1809. — Of the article " Geographie botanique," in 

 the ' Dictionnaire des Sciences Naturelles,' 1820. — And of the article " Phy- 

 tographie," in the 'Dictionnaire classique d'histoire naturelle.' 



