THE SCIENTISTS OF COLORADO. 709 



and Jarvis Hall, and with the C. C. R. R.; is perhaps the finest engineer in the 

 State ; while of the different branches of scientific research into which he 



" Dips deep down, and brings the hidden waters up," 

 his articles in the Review are much better evidences than anything I could say 

 beyond them. 



Professor — now Senator — N. P. Hill has done a wonderful amount toward 

 the development of his State, the success of his endeavors culminating in the 

 works at Argo, two miles east of Denver. These are a combination of smelting, 

 lixiviation and reduction. There is but one other such in the world, that at 

 Swansea, Wales ; and before these were built hundreds of thousands of tons of 

 ores were yearly sent to Wales from this part of the country for treatment. The 

 superintendent at Argo is a son of the superintendent at Swansea, and was in- 

 duced by Senator Hill to accompany him to this country. The works are a 

 wonderful reflection of the labor, time and study spent in their erection by the 

 Senator. It may be added that he is on the senate committee upon the Smith- 

 sonian Institution ; a pleasant recognition of his services to science. 



Professor Richard Pearse, the metallurgist at Argo, is one of the leading 

 men in that department in the State. He has made many valuable improve- 

 ments upon the Swansea methods of refining and separating the copper matte so 

 as to adjust it to Colorado ores. It may be proper here to state that the works 

 were first located at Black Hawk by the old Boston and Colorado Smelting Com- 

 pany, but removed by Messrs. Hill and Pearse to Argo, because of its better 

 facilities for obtaining fuel. 



Prof. J. Alden Smith, the present State Geologist, is the one to whom 

 Boulder County is very largely indebted for the discovery of telluride ores in 

 supposed valueless rock in that district, which gave a lasting impetus to the 

 mining interests of that county. His opinions are marked and valuable, and it 

 is but a slight reward of his services that he received his present appointment 

 from the Governor. 



To the Episcopal Church and the late Bishop Randall, Colorado owes 

 several of her scientists. Among those induced to come to Colorado through 

 their means were Rev. E. L. Greene, quite well known as a botanist, now 

 removed to California; Prof, and Rev. Arthur Lakes, an enthusiastic geologist, 

 and Prof. E. J. Mallett, a chemist. 



Prof. Lakes, who had classes at the School of Mines and Jarvis Hall, was an 

 excellent teacher, as well as collector, and indefatigable in exploring the regions 

 near and far that promised anything of interest. I have a pleasant memory of 

 him when I was a school-girl. Our class in geology were having a day's excur- 

 sion to Morrison, and the kindly Professor hearing of it, rode over from Golden 

 to show us some of the interesting points thereabouts, though he did not reach 

 home until midnight in consequence. 



Mr. Mallett, who is a son of General Mallett, late consul at Florence, was 

 for a while Professor of Chemistry at Wolfe and Jarvis Halls. Later he has 



