part 1] AN^XIVERSARY ADDRESS OF THE PBESIDE]>fT. Ixl 



ledo-e ; but he bore no malice, and there were few indeed among 

 those who had been his scientific adversaries whom he could not 

 in the end reckon as his personal friends. And to his friends no 

 man was ever more genial or more generous. Great as was his 

 ioy in his own work, he loved still more to see his students and 

 friends, whom he had endowed with the precious gift of his own 

 ideas, bring home the harvest of the seed Avhich he liimself had 

 sown. 



At the time when Lapworth's work began an epocli of great 

 discoveries and broad generalizations was passing away, to be 

 succeeded by a period of smaller things, the tilling-in of details, 

 the work of tlie systematist, the species-maker, and the collector 

 of isolated facts. It was the work of Lapworth, not only to show 

 how thoroughly and perfectly facts should be collected, but to 

 institute a new era of co-ordination, to evolve new laws and new 

 principles. To have reduced the Southern Uplands to order was 

 no light task, but to wring fi-om their crumpled rocks the Lower 

 Palaeozoic life-succession which has set in order the strata of this 

 age all over the world was a work of genius. To have broken 

 down the reticence of the Highlands was an achievement, but 

 to use the secret that he had sui'prised as a key to the tectonics 

 and location of mountains and volcanoes, to the build of continents 

 and oceans, and to the very structure and life-history of the 

 planet itself, is evidence of a vigour of intellect which could 

 not only link Geology again with the sciences of Physics, Biology, 

 and Geog•raph3^ but could afford to discover a new continent as a 

 by-product of its activity. [W. W. W.] 



Joseph Paxsox Iddiis'GS was born in Baltimore in 1857. He 

 was of Quaker stock on his father's side, and both parents had 

 refined literary tastes, so that his early environment was that of a 

 cultured home. 



His scientific life divides itself naturally into three periods. 

 From 18S0 to 1895 he was attached to the Western Division of 

 the United States Geological Survey, from 1895 to 190S he was 

 Professor of Geology in the University of Chicago, and from 

 1908 until the end he devoted himself to private work, living in 

 his countr}^ house at Brinklow, Montgomer}^ County (Marjdand). 

 For the greater part of the first period he was a member of the 

 staff employed in surveying the Yellowstone National Park and 

 adjoining districts — a position which gave him the opportunity of 



