Learned Societies. 421 



On the ill of February M. Wildenow read, in German, 

 an efiav on a new clarification of the mammifcra;. 



On the 8th M. Bode communicated feveral articles of in- 

 telligence from his agronomical correspondents. Me prefent- 

 ed alio a memoir on the orbit of the comet obferved at Berlin in 

 1797, which contained iome refults refpeoting its real courfe. 



On the 15th M. Caftillhon, Reflections, in French, on the 

 fenfes in general, and particularly on the organs of the inter- 

 nal fenfe. 



On the 22cl M. Gedike, a paper, in German, on the reci- 

 procal influence of civiliiation on writing, and of writing on 

 civilifation. 



On the 8th of March M. Burja communicated a paper, in 

 French, on the progrefs of light palling through a tranfparent 

 prihn, with an application to achromatic prifms, and achro- 

 matic telefeopes. 



On the 15th M. Aneillon prefented a French memoir on 

 prefenfation. 



On the 2 2(1 M. Bafiide prefented, in. French alio, va- 

 rious obfervations on the French language, in regard to dif- 

 ferent paflages of Montaigne, with fume critical remarks on 

 that author. 



On the 29th M. Walter, the fun, read a German memoir 

 on the lkiii. 



On the 19th of April M. Bode prefented the eight firft 

 fceets of his celeftial chart. 



On the 3d of May M. Teller prefented a paper, in Ger- 

 man, on moral purifm and empinfm, and the ideas which 

 ought to be formed of them. 



On the 10th M. Culm, a paper, in German, on the htttory 

 of the origin of the Germanic conltitution. 



On the 7th of June M. Achard, a German memoir, con- 

 taining researches on the germination of feeds, and the growth 

 of plants. 



On the 14111 M. ( union, a paper, in French, on anew cal- 



culus, which he call- eulcul d" expo/itwih 



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