Aerial Navigation. 81 



the summit of the Peak of Teneriffe and in the province of 

 New Andalusia. In the second he gave an account of the 

 operations performed in the provmce of Venezuela, and ia 

 the plains of Calobozo, where he made curious experiments 

 on the gymnotus electrivus. In the third memoir he gave a 

 short view of his dangerous navigation on the Oronoquo,. 

 the Rio Negro, and Ihe Carsequiare, undertaken for the 

 purpose of determmina: astronomically the communication 

 of the Orinaro v;ith the river Amazon. These memoirs, 

 which en)brace everv thiiig interesting in regard to the 

 geography, botany, and mineralogy of these countries, and 

 of the moral history of man, will soon be printed, to give 

 to the public a short view of this expedition, until the ob- 

 servations themselves are published. Several drawings 

 made by M. Humboldt are now engraving. 



SOCIETY OF ARTS AND SCIENCES AT MENTZ. 



This society, in its first public sitting in the month of 

 March last, proposed, as the subject of a prize for 1805, 

 an eulogy on John Gaensfleisch de Sorgcnloch, named Gut- 

 temberg, a native of Mentz, one of the inventors of print- 

 ing. The prize will be a gold medal of the weight of 240 

 francs, with the image of Guttemberg. The eulogy may 

 be written in French or in German. The competitors must 

 transmit their productions, post-paid, to the president be- 

 fore the middle of May 1805. 



The same society has resolved to raise a monument to 

 the memory of Guttemberg. It is to consist of a public 

 fountain, and a premium will be given for the execution of 

 it. For this purpose a subscription has been opened, and 

 all the members of the republic of letters are invited to 

 contribute towards it. 



XIV. Intelligence and Miscellaneous Articles. 



AERIAL NAVIGATION. 



By Professor Robertson. 



Riga, Augus: 24.. 



JL HE following are some further particulars respecting the 

 aerial excursion of M. Robertson, which took place at six 

 o'clock in the evening of the 18th. At tlic end of fiftetn 

 minutes he lost himself, at the height of 500 fathom', in 

 hick clouds strongly agitated by the wind. Wh^Jl he set 

 Vol. £'0. No. 77. t>c"^ lb04. F out 



