Juhlorio-cvfiv-'S^cielv of the Scten^es alLe'tpJic, &c. 46<} 



'da\V5, and the inouth is teniiindted bv a bill like a 'diick. 

 The parts of generation aremolt unconinion, and, from \hc 

 female not having a uterus, Mr. Home is led to fufpc£t it is 

 oviparous. 



THE JABLOiVOVVSKY S'OCIKTV OF THE SCIENCES AT 

 * iEIPSIC. 



This Society has propofed for 1803 the following 

 Prize Qutjiions: 



Hijlory. — An account of the rights and condition of the 

 dignitv of earl in the northern kingdoms. 



Miitbematics. — An accurate view ul" the progrefs and im- 

 provement of tlie mechanical fciences during t!ie eighteenth 

 century. 



Economy, — On the influence of the atmofpliere on the fer- 

 tility of the foil, accordir.o to the iaieli experiments and re- 

 fearches. How far niay the nature, fituation, and culture of the 

 f(,il c<Jiitribulc to render this inducnce active and powerful t 



The tafts adduced by the candidates in their papers 

 mult be confirmed by the teftimony of refpedlablc authors ; 

 but the papers ihemfelves, according to a condition c(ki- 

 blidicd by the founder, mult be writien in Latin or in 

 French. The prizes coufiii of gold medallions of the value 

 of 24 ducats each. 



The focicty invites all the friends and promoters of fcience 

 to ar.l'.ver the above queitions. The anfwers niu(t be tranf- 

 mitted, wiili a fealeJ noie containing the name and refidence 

 of the author, to Charles Frederick Hindenburg, profellbr of 

 philofophy at Lcipfic. Tiie f>eriod for receiving the anfwers 

 bus not vel been announced. 



AC A DEM V Ol-^ TIIS USEFUL SCIENCES AT ERFURT. 



In tiie futino of May 2, ^I. Rcfch laid before the fociety 

 feverai ipeclujens of leather tanned, according to his procefs, 

 by means of one-fourth bark and three- fourths turf (black 

 peat-mf)f;), which were found c.xceedinirly good ; on account, 

 however, of fome doubts excited in regard to tlie activity ot 

 turf, he means to caufe his experiments to be repeated. 



M. HomevL-r, of Zinuucr near Alfeld. tranfmitted to the 

 fociety fome twigs grown together, in order to f1)o\v how 

 mankind may ha\eTallen upon the invention (»f grafting.^ 



Tv.o pape/s were rend, one on the afplcnhim and lomc Kinds 

 of fern related to it, by M. Bernhardi, of Erfurt ; and c^c- 



teriments on the preparation of cif.aubar \i\ the wet way, 

 y M. Buchulz, of Er!urt. 



In 



