ISAAC HAYS. 381 



the Medical News, in 1843, and in 1874 the Monthly Abstract of 

 Medical Sciences was started under his direction. 



In 1834 he planned and published two volumes of the American 

 Cyclopaedia of Practical Medicine and Surgery, which was intended to 

 be the most thorough and elaborate treatise of the time. He had as 

 contributors such men as Bache, Chapman, John C. "Warren, Dewees, 

 and many other distinguished men. The parts which were published, 

 and to which he himself contributed largely, showed the high character 

 of the work, which only failed of success on account of the meagre 

 support it received from the profession at large. 



His first contributions to medical literature were two papers on 

 Purulent Ophthalmia, and another on Inflammation of the Sclera. 



In 1822 lie was appointed one of the surgeons to the Pennsylvania 

 Infirmary for Diseases of the Rye and Ear ; and in 1834 he obtained a 

 similar appointment to the Wills Ophthalmic Hospital, — a post which 

 he filled and honored for twenty years. 



In 1843 he edited, with valuable additions, a Treatise on Diseases 

 of the Eye. by Sir Wm. Lawrence ; and in other years Arnott's Ele- 

 ments of Physics, Iloblyn's Dictionary of Medical Terms, Broussais's 

 Chronic Phlegmasia: and his Principles of Physiological Medicine, 

 were published under his careful supervision. 



In 1828 he published an edition of Wilson's American Ornithology, 

 and from the time when he was made a Member of the Academy of 

 Natural Sciences of Philadelphia, two years before he took his medical 

 degree, until his death, he always took a warm interest in natural 

 history, and delighted to pass many hours in the study of his favorite 

 subjects. 



During a long life Dr. Hays devoted himself with rare energy and 

 ability to raising the standard of medical literature in this country ; 

 as a continuous service of over half a century on the American 

 Journal of Medical Sciences will show. 



Dr. Hays was honored and loved in all his social relations ; and 

 will be missed, not only by those who knew him personally, but by 

 the profession at large. 



WILLIAM T. ROEPPER * 



Professor William T. Roepper of Bethlehem, Pensylvania, 

 died on the 11th of March, at the age of seventy. Professor Roep- 



* From " The American Journal of Science." 



