Royal Society of Copenhagen $1% 



Here the matter ended ; and after the paper given you on 

 the American maple (fee p. 182), 1 hope the fubjeft will be 

 again purfued with ardour in this country, and this curious 

 invciligation turn of profit to this nation. — 1 fhall fend you, 

 for your next number, a paper on the mulberry tree, and 

 the rearing of filk-worms. 



INTELLIGENCE. 



LEARNED SOCIETIES. 



DENMARK. 



JL HE Royal Society of Copenhagen has this year pfo- 

 pofed a gold medal, value 100 rix-dollars, for the beft an- 

 fwer to each of the following queftions. 



I. HISTORY. 



Quasnam gentes ante Norvjegicos Americam invenertnr, 

 et itinera per mare in banc terrae regionem inftiterint ? 

 Quoufque detedta Norvregicorum in America prsefertim Auf- 

 trum verfus extenfa fuerint ? Qu?e hac de re conftitui po- 

 terunt, argumentis et conjecturis ex fcriptis, monumentifve, 

 v. c. munimentis, asdificiis, Unguis, traditionibus Americanis 

 probanda funt. 



" What nations difcovered America, and kept up an in- 

 " tercourfe by fea with that country before the Norwegians? 

 " How far did the dilcoveries of the Norwegians in America 

 " extend towards the South ? The proofs and grounds of 

 " conjecture muft be drawn partly from written documents 

 •' and partly from monuments, fuch as fortifications, edi- 

 * l fices, languages and traditions (till exifting in America." 



II. IN THP. MATHEMATICS. 



Invenire fundtionem omnium quantitatum quse con- 

 juncYim determ ; nant magnitudinem efFeclus calorifici, cujuf- 

 cunque materiel igni accipiendo aptae in re familiari ufitatas, 

 tarn ligni, quam cefpitis caminarii et lithantracis, feu carbo- 

 num foffilium cujufcunque fpeciei. 



Y 2 iEquatio 



