Demonst 

 dcnce 



pool hi 



Year. 



1780 

 1781 

 178'i 

 1783 

 1784 

 1785 

 178f) 

 1787 

 1788 

 1789 

 1790 



1791 

 1792 

 1793 

 1794 

 1795 

 1796 



