viii EDITOR'S PREFACE. 



the German language (Die Frauenmilcli, u. s. w. Berlin, 

 Forstner, 1838), and fully established his reputation as one of 

 the most successful investigators of the age in the departments 

 of organic chemistrj'- and microscopy. It was regarded by 

 Berzelius and others of our first chemists as the most perfect 

 work on the subject of which it treats. 



In 1839 his tabular ' View of the Mineral Springs of Europe, 

 arranged with especial regard to their chemical composition 

 and their physical and chemical characters^ (Die Heilquellen 

 Europas, u. s. w., Berlin, Eorstner,) made its appearance, a work 

 of very considerable labour, in which he collected and systema- 

 tically arranged no less than 1045 analyses of European mineral 

 waters; and in 1841 we find him an extensive contributor to 

 Dr. Nicolai's ' Manual of Medical Jurisprudence,^ having, in 

 fact, executed the whole of the chemical and toxicological portion 

 of the work. About this time the first part of the ' Chemistry 

 of Man' appeared; it was not, however, completed till the 

 summer of 1842, in consequence of Simon's determination to 

 render the work as rich as possible in original analytical obser- 

 vations. With this view he was a constant attendant at 

 Schonlein's clinical class, where his chemical services were 

 highly valued, as manifested by the frequent reference made 

 to them by that distinguished physician in his published Clini- 

 cal Lectures. Scarcely had Simon concluded the ' Chemistry 

 of Man' before he entertained the idea of editing a quarterly 

 periodical devoted to his favorite pursuits, physiological and 

 pathological chemistry. It appeared under the title of ' Beitrage 

 zur physiologischen und pathologischen Chemie und Mikro- 

 skopie, in ihrer Anwendung auf die praktische Medizin.' He 

 lived to edit only three numbers. The fourth (edited by his 

 friend Dr. Minding) contained the melancholy tidings of his 

 death, which took place at Vienna on the 23d of October 1843, 

 after an illness of only four weeks. Though no longer amongst 

 us, the good that he did died not with him ; his works, no 



