328 APPENDIX. 



is certainly too hasty in recommending benzoic acid as a 

 remedy for the gouty and calculous concretions of uric 

 acid. He seems to suppose that the uric acid has been 

 employed in the conversion of benzoic acid into hippuric 

 acid ; but as his observations were made on a gouty pa- 

 tient, it may be supposed that the urine, even without 

 the internal use of benzoic acid, would have been found 

 to contain no uric acid. Finally, it is clear that the hip- 

 puric acid existed in the urine in combination with a base, 

 because it only separated after the addition of an acid. 



