258 Miscellaneous Intelligence. 



thoroughly imbued with the spirit of the scientific investigator. 

 The list of his published papers includes over one hundred titles. 

 He commenced his contributions to science in 1 842 and for the 

 ten years following, when in Germany, he published a number of 

 papers chiefly upon chemical subjects. With 1852 commenced his 

 contributions to the Proceedings of the Philadelphia Academy and 

 here, as also in the Proceedings of the American Philosophical So- 

 ciety and in this Journal, his papers appeared at frequent intervals 

 up to a short time before his death though in the later years he had 

 much to contend against in the way of ill health; His last paper 

 appeared in this Journal in January, 1893. These papers are 

 chiefly mineralogical and a considerable number of them are upon 

 new species ; they all show the hand of the skillful analyst and 

 the patient industry of the scientific worker. Some of his larger 

 contributions were those on the Mineralogy of Pennsylvania 

 (1875-76), also to the Mineralogy of North Carolina (1871-1881). 

 Bulletin No. 74 of the U. S. Geological Survey (1891) gives an 

 annotated list of mineral localities in the latter State. His mono- 

 graph upon the North Carolina corundum and the mauy phases 

 of its alteration is a work of great importance. 



Perhaps his most important contribution to chemistry proper 

 was that upon the ammonia-cobalt bases, which he discovered in 

 1846; in 1856 with Dr. Wolcott Gibbs, he contributed to the 

 '• Smithsonian Contributions to Knowledge," a monograph on 

 "Researches on the Ammonia-Cobalt Bases." 



Dr. Genth was a member of many scientific societies, and in 

 1872 he was elected a member of the National Academy of Sci- 

 ences. 



