APPK^DIX. 



bniary 1770 ; member of the academy of sciences in i8i5, principal 

 engineer to the royal board of mines, named to the chair of the Museum 

 in August i8aa. 



Elementary treatise on mineralogy applied to the arts, a vols. 8, 

 1807 ; Natural history of fossil Crustacea, and particularly of the trilo- 

 bites, i vol. 4% 1832. 



Attistant.M.. de la Fosse (Gabriel), born at Saint Quentin in 1796. 

 M. d< published any work. M. Hauy thus speaks 



of him in the introduction to his treatise on natural philosophy, p. 02 : 



We have great reason to felicitate ourselves on the assistance of 

 M. de la Fosse, who has ably seconded us in the experiments designed 



to prove the truth of the new facts we are about to lay befo 



public He has aided in the composition of several articles.... By the 



treatise on crystallography, which is about to appear, the public will 



be able to judsre of the success with which he has cultivated that im- 



portant branch of mineralogy. 



GE5EBAL CHYMI6TBY. 



Profettor. M. Laugier (Andrew}, born at Paris in 1770 ; member of 



the academy of medicine, attached to the Museum with the title of 



mt .Naturalist, charged with the analysis of bodies in June i8o5, 



and appointed substitute to M. Fourcroy in his lectures two years after. 



named professor on the 17th of February 1810. 



Numerous memoirs in the Transactions of the institute, the Academy 

 of sciences, the Annals of chymistry and of the Museum. 



Asfistant.}\. Dubois 'Anthony Charles), born at Paris in 1776 ; at- 

 tached to the chymical laboratory in 1796. 



CHYMISTBY APPLIED TO THE AITS. 



Profettor. M. Vatiquelin (Nicholas Lewis), born at Hibertot, near 

 Pont-l r Ev"que, in 1760; named to the academy of sciences in 1792, 

 director of the school of pharmacy, elected professor at the Museum 

 in i8o|. 



Ifumerous memoirs in the Transactions of the institute and tn- 

 demy of sciences, in the Annals of t!e Museum and those of chymistry, 

 in the Journal of the mines and in the Bulletin of the philomattic society. 



Aftistant. M. Chev/Mil Michael Eugene), born at Angers in 1786; 

 named to the Museum in 1809. 



