T3 
of the Acid of Borax. 
salt obtained in conjunction with the coal? These are all 
questions which excite great interest, but which are not easily 
answered. How far I have been successful in resolving them, 
some subsequent Essays will show ; which I shall have the 
honour to lay before the Royal Society, as soon as I shall have 
sufficiently repeated the experiments I have already made. 
mdccxcix. 
L 
