398 Pnjfessor Tralles. — Cuunt Derlhollet, 



France invited other nations to send Commissioners to assist 

 the Committee of Weights and Measures, \vhicli were de- 

 signed for universal adoption, the Swiss Repubhc sent Mr. 

 Tralles, as the Dutch sent Mr. Van Swinden, (the only two 

 foreigners who assisted): and as a compliment to them, these 

 two were requested to draw up reports of separate parts of the 

 committee's labours. Mr. Tralles afterwards became a Mem- 

 ber of the Academy of Berlin, in which Academy the vacan- 

 cies are filled by the existing INIembers, the Government ap- 

 proving or rejecting the choice. When an University was 

 established in Berlin in 1813, Mr. Tralles became Professor 

 of Mathematics and Astronomy in that University, and deli- 

 vered lectures to the students. In this situation as Academi- 

 cian and Professor he continued till his death. He married a 

 Swiss lady (the sister we have understood of Sir Francis dTver- 

 nois), who is now living and by whom he has left some chil- 

 dren. His late mission to this country was in order to buy 

 instruments for the Prussian Government. There are several 

 of his papers in the Memoirs of the Berlin Academy ; princi- 

 pally on mathematical and geodetical subjects. Geodesy was 

 always his favourite pursuit. He was about 60 years of age 

 when he died. — He attended the first meeting, for this season, 

 of the Royal and Astronomical Societies, and his death has 

 occasioned the greatest regret here among those who had be- 

 come acquainted with him. He was buried on Saturday the 

 23d of Novembei", in the church of St. Andrew, Holborn, in 

 this city, and his funeral was attended by the Prussian Ambas- 

 sador, Consul and Vice-Consul, and by several English gen- 

 tlemen who respected his talents. 



Count Berthollet. 

 Paris, Nov. 8. — Count Berthollet, one of the principal found- 

 ers of modern chemistry, died last Wednesday, after a short 

 illness. Since the death of Lagrange and Monge, the sciences 

 have not suffered a more severe loss. No man, perhaps, had 

 more friends, or kept them longer ; and none was more de- 

 servuig of happiness, by the elevation of his character, tlie no- 

 bleness and generosity of his sentiments, the constant mildness 

 of his manners : he has left in society as great a vacancy as in 

 the sciences, and as difficult to be repaired. Fie had attained 

 the age of 73 years and 6 months. His robust constitution 

 made his friends hope that he would live longer, and there was 

 no indication that he was likely to be carried off" so soon. The 

 strength of mind with which he bore and concealed his suffer- 

 ings, tor fear of afllictiiig a beloved wife, can only be comjiared 



with 



