M. Keller on the Conversion of Benzoic into Hippuric Acid^*

We reprint this paper from Liebig's “Animal Chemistry,” by Dr. Gregory, just published. Mr. Ure seems to have concluded that the uric acid was converted into hippuric, under the influence of benzoic acid; but, from the experiments of Keller, it would appear that it is the benzoic acid, and not the uric, which undergoes transformation. This is an important point which we trust further researches of Mr Ure may enable him to clear up.—Eds.