BIOLOGY IN HUMAN AFFAIRS 



Agriculture. Three other varieties of his origination are 

 on this same list : American Pillar, Silver Moon, and Mary- 

 Wallace. Paul's Scarlet Climber is second on the list and 

 is the only variety from outside the United States. The once 

 popular Crimson Rambler — an introduction from Japan, 

 whose early history is unknown — is giving way to flowers 

 more nearly like the bush roses. 



The man who has had probably the greatest influence on 

 the development of the rose in recent years has been Jules 

 Pernet-Ducher of Lyons, France. For forty years this 

 skilled hybridist has been producing new and better roses, 

 and he is the founder of a new class called the Pernetiana 

 group. By crossing the hybrid perpetual, Antoine Ducher, 

 with the Persian Yellow, he obtained Soleil d'Or and 

 Austrian Copper. From these have come some of the loveli- 

 est of roses: Souvenir de Claudius Pernet, Souvenir de 

 Georges Pernet, Madame Edouard Herriot, Mrs. Beckwith, 

 Angele Pernet, Lyon, Ville de Paris, President Cherioux, 

 Willomere, and Severine. 



Of the fourteen Gold Medals awarded in the Bagatelle 

 Rose Trials for roses originating in France, twelve have 

 been won by Pernet-Ducher. For varieties of foreign origin, 

 five have gone to Alex Dickson of Ireland, three to Leenders 

 and Company of Holland, two to Howard and Smith, and 

 one to E. G. Hill in the United States. 



The way in which new roses are developed is illustrated 

 by the two following incidents. Van Fleet first crossed an 

 old tea rose known as Devoniensis with the Memorial rose. 

 One of the crossbred seedlings seemed to have some merit, 

 but he was not satisfied with it. Emasculated flowers were 

 then pollinated by the Cherokee rose, a naturalized species 

 from China that runs wild in the South. A seedling from 

 this parentage was unexpectedly more hardy than any of its 

 ancestors and, on account of its porcelain-white, saucer- 

 shaped flowers, was appropriately called Silver Moon. This 



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