ft 



APPENDIX. 587 



bruary 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 1822. 



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°5 1822. 



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

 M. de la Fosse has not yet published any work. M. Hauy thus speaks 

 of him in the introduction to his treatise on natural philosophy, p. 32 : 



« 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 before the 

 » 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 judge of the success with which he has cultivated that im- 

 » portant branch of mineralogy. » 



GENERAL CHYMISTRY. 



Professor. — M. Laugier (Andrew), born at Paris in 1770 ; member of 

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

 Assistant Naturalist, charged with the analysis of bodies in June i8o3, 

 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. 



Assistant. — M. Dubois (Anthony Charles), born at Paris in 1776 ; at- 

 tached to the chymical laboratory in 1796. 



CHYMISTRY APPLIED TO THE ARTS. 



Professor. — M. Vauquelin (Nicholas Lewis), born at Hibertot, near 

 Pont-rEveque, in 1760; named to the academy of sciences in 1792, 

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

 in 1804. 



Numerous memoirs in the Transactions of the institute and the aca- 

 demy of sciences, in the Annals of the Museum and those of chymistry, 

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



Assistant,— M. Chevreul (Michael Eugene), born at Angers in 1786; 

 named to the Museum in 1809. 



