NOTE. 



1 WOULD beg leave to refer the chemical as well as the physiological reader 

 ticularly to the analyses (in Note (27) Appendix) of the animal tissues, which 

 ought to have been referred to on pages 21 and 42, and which at present are only 

 referred to in Note (7.) Since the work was printed, moreover, there has been 

 added, at the end of the Appendix, an interesting paper by Keller (see page 101,) 

 confirming the very important observation of A. Ure, junior, as to the conversion of 

 benzoic acid into hippuric acid in the human body ; a fact which, I perceive, by the 

 Philosophical Magazine for June, has also been confirmed by Mr. Garrod, probably 

 at an earlier period than by M. Keller. The reader will perceive that this fact 

 strengthens materially the argument of the Author on the action of remedies. 



W. G. 



