PRESIDENTIAL ADDRESS. 81 



Morton, Holbrook, Gibbes, Gould, DeKay, Storer, Hitchcock, 

 Redfield, the brothers Rogers, Jackson, Hays, and Owen. 



Among the rising men were Baird, Adams the conchologist, 

 Burnett, Harris the entomologist, and the LeConte brothers 

 among zoologists ; Lapham, D. C. Eaton, and Grant, among 

 botanists; Sterry Hunt, Brush, J. D. Whitney, Wolcott Gibbs, 

 and Lesley, among chemists and geologists, as well as Schiel, 

 of St. Louis, who had before 1842 discovered the principle of 

 chemical homology. 



I have not time to say what ought to be said of the coming of 

 Agassiz in 1846. He lives in the hearts of his adopted country 

 men. He has a colossal monument in the museum which he 

 reared, and a still greater one in the lives and works of pupils 

 such as Agassiz, Allen, Burgess, Burnett, Brooks, Clarke, Cooke, 

 Faxon, Fewkes, Gorman, Hartt, Hyatt, Joseph LeConte, Lyman, 

 McCrady, Morse, Mills, Niles, Packard, Putnam, Scudder, St. 

 John, Shaler, Verrill, Wilder, and David A. Wells. 



XVII. 



They were glorious men who represented American science at 

 the middle of the century. We may well wonder whether the 

 present decade will make as good a showing forty years hence. 



The next decade was its continuation. The old leaders were 

 nearly all active, and to their ranks were added many more. 



An army of new men was rising up. 



It was a period of great explorations, for the frontier of the 

 United States was sweeping westward, and there was need of a 

 better knowledge of the public domain. 



Sitgreaves explored the region of the Zufii and Colorado rivers 

 in 1852, and Marcy the Red River of the North. The Mexican 

 boundary survey, under Emory, was in progress from 1854 to 

 1856, and at the same time the various Pacific railroad surveys. 

 There was also the Herndon exploration of the valley of the Am- 



