2 6o POPULAR SCIENCE MONTHLY. 



Engineers and of the Iron and Steel Institute of Great Britain. In 

 the New York Academy of Sciences he was active for many years, 

 and held the vice-presidency from 1869 to 1881. In 1866 Professor 

 Egleston was associated with the Agricultural and Geological Survey 

 of the Union Pacific Railroad; in 1868 was appointed a United 

 States Commissioner to examine the fortifications of the coast; and 

 in 1873 was one of the jurors for the International Exposition at 

 Vienna. From Princeton and Trinity Colleges he received, in 1874, 

 the degrees of Ph. D. and LL. D., respectively, and from the Gov- 

 ernment of France the rank of a Chevalier of the Legion of Honor 

 in 1890, and the exceptional rank of " Officier " in 1895. 



His papers, published either separately or in the proceedings of 

 the several engineering societies above mentioned, the Annals of the 

 New York Academy of Sciences, the School of Mines Quarterly, etc., 

 cover a wide range of subjects connected with mineralogy, metal- 

 lurgy, and mining operations. In mineralogy he was especially 

 devoted to crystallography, and his noble private collection was 

 gathered and arranged with relation to that department. Besides 

 his strictly metallurgical articles and treatises, he has dealt with 

 such topics as rails, in relation to accidents; furnaces and their 

 construction; fire-brick and refractory substances; slags and their 

 utilization, etc.; the decay of building stones, in connection with 

 the Obelisk; technical education, manual training, and improve- 

 ment in the conditions of workingmen in mining and metallurgical 

 occupations. 



His chief published works are The Metallurgy of Gold, Silver, 

 and Mercury in the United States, two large volumes, 1887 and 1890, 

 and his Lectures on Mineralogy, to which may be added his Tables 

 for the Determination of Minerals, Metallurgical Tables on Fuels, 

 Iron, and Steel, diagrams and comparisons of crystals and crystal 

 notation, tables of production of many of the metals, report on the 

 Union Pacific Railroad survey of 1868, and many others. 



Within the past two years Professor Egleston has withdrawn from 

 active work in the School of Mines, and bears now the title of 

 Professor Emeritus; his health has been a good deal impaired, and 

 his work has passed largely into the charge of younger men who have 

 grown up under his direction as students and assistants. During 

 the last winter he has presented to the school his entire scientific 

 library and his private collection of minerals above referred to, 

 some six thousand specimens. These, in addition to the great 

 mineralogical treasures already possessed by the institution, all gath- 

 ered and arranged under his supervision, will make the School of 

 Mines collection certainly one of the finest in the country. 



Although devoted to his own special branches, Professor Egleston 



