Batavian Society of the Sclenies at Haarlem, &c. 19 1 



' The report arid its conclufions are adopted. It ihaU be 

 read at the next public fitting. 



'Certified agreeably to the original. 



(Signed) Lacroix, fecretary. 



BATAVIAN SOCIETY- OF THE SCIENCES AT HAARLEM, 



This fociety has propofed the following queftions till the 

 ift of November 1803 : 



lit, What have we been taught by the lateft obfervations 

 in regard to the influence of the oxygen of atmofpheric air 

 in changing colours, whether aided with the action of light 

 or not; "and what advantages can be thence derived ? 



2d, What have we learned from the difcoveries refpecting 

 the decompofition of water and atmofpheric air in regard to 

 the manner in which plants obtain their nourifhment; and 

 what conclufions can thence be deduced for improving the 

 culture of ufeful vegetables ? 



,$d, What has experience taught us in regard to the puri- 

 fying corrupted water and other impure fubltances by means 

 of charcoal ? How far can the manner in which this is done 

 be explained from the principles of chemiltr) ; and what 

 further advantages can be derived from it ? 



The fociety have extended alfo to the ift of November 1803 

 the three prizes, propofed in 1799, refpecling the chemical 

 difcoveries in regard to the phyfiology of the human body J 

 alfo the queition propofed in 1796, and repeated in 1799, 

 refpe&ing the whale fiihery ; the queition, propofed in 1800, 

 refpecling ChiaJni's vibration figures ; and the two queftions, 

 propofed in 1801, on the nature of lire, and the application 

 of it to produce heat, and on preventing the corruption of 

 itagnant water. 



They have repeated alio, for an indefinite time, the three 

 following queftions, propofed 17.93 — 1795, on the utility of 

 animals apparently pernicious ; on the ufe, in the materia 

 med'ica, of unknown indigenous plants ; and on the plants, 

 not yet in ufe, which may be employed as found and whole* 

 fome nourifhment. 



MKDtCAL SOCIETY" AT MONTPELLIER. 



This fociety has propofed the two following queftions, the 

 prizes of which will be adjudged, the firft in May 1803, ani * 

 the fecond in May 1804. The prize fur each is 500 francs. 



lit, To determine in what kind of chronic difeales, and 

 under what circumftances, inflammation may be ufeful or 

 dangerous; and in what cafes in the treatment of thefe dif- 

 eales it ought to be excited or moderated ? 



5 2d, To 



