Prize Quejlhns* 2S3 



THE BATAVIAN SOCIETY OF THE SCIENCES AT 

 ROTTERDAM. 



On the 2i(l of Auguft, the fociety propofed the following 

 new prize ciutftions. , 



ill Wliat are the phcenonicna oblerved m regard to 

 the oriain and progrefs of waves, hi laying the foundalinns 

 of piers, at greater or lefs dillances ? What means have 

 from time to lime heen difcovercd, and incd with more or 

 lefs advanta^re to reflrain or to leflen the deftruaue conie- 

 qoences of the courfe of the waves ? Wliat can be deduced 

 from thefe phajnomena, for explainmg the canfe ot waves; 

 and what ufe can be made ofihis knowledge, to miprove the 

 means already adopted for fubduing the waves, or to render 

 them more powerful ?— To be aniwered before the ill ot 

 March, 1804. . . , 



2d. What is the reafon that the expermients m regard 

 to the conduding power of bodies for caloric, are io uiicer- 

 taifi and often contradiAorv ? and what is the fu re It and 

 propereft method to afcertain the quantity of this conducting 

 power both in folld and fluid bodies?— To be aniwered be- 

 fore the ift of March, 1803. , , f 1 1 



The prize for each quelllon is a gold medal ot the value 

 of c{o ducats. The papers mult be tranfmitted, poll paid, 

 under the ufual conditions, to the direftor and tirlt lecrctary 

 of the fociety, Oliver Chriftian Eickma. 



THE JABLOWNSKY SOCIETY OF THE SCIENCES AT 

 LEIPSIC. 



This fociety has propofed the following prize queftions for 



*^' nXj^^An account of the conncaion which fubfifled 

 between the kmgdom of Poland and the. grand D^-j-l'V ot 

 Lithuania, before and after the union edabhflied by the 

 aflemblv of the Stales at Lublin ini,569. ^ , , r 



Natural Pbilojopbj. — H\\\ov\cCi\ account of the theory ot 

 attraaion, and the application made of it from the lime oi 

 Newlon to that of Laplace. .^ , ^c^ 



Econo?nv.—\\'h3.i. foreisin trees and Hirubs, ufelul on ac- 

 count of their fpcedv growUi, their duration, aiid incir t.lnels 

 for firc-wood ; or applicable to the purpoles of dyeing, tan- 

 ning, or making furniture, can be cultivated and natural- 

 ized in the German pleahire-grounds? ,,1„»nf 

 The pri/.e for each will be a gold medal of the n due of 

 JUducais; and the papers mull be Irani milted, ;'"<:l^'; »« 

 Mhial eondilions, to proicffor VVicland at Leipfic, bctorc the 

 end of February, 1803. 



ELECTORAL 



