1922] SARGENT, FIRST FIFTY YEARS OF THE ARNOLD ARBORETUM 143 



Europe; and for more than forty years continuous efforts have been made 

 to make it possible for Harvard to make good in its contract with Mr, 

 Arnold's Trustees. Some progress has been made but there are still regions 

 of the northern hemisphere to explore, and trees still unknown in Massachu- 

 setts to be brought here. 



At once after his appointment the Director began to obtain plants and 

 seeds from European botanical and horticultural establishments; and in 

 December 1878 the Arboretum received from William S. Clark, first 

 President of the Agricultural College at Sapporo in Japan, its first direct 

 consignment of seeds from eastern Asia. 



_ 



The first opportunity to obtain on a large scale for the Arboretum 

 American plants not then in cultivation in the United States came in 1877 

 when the Director was asked to prepare for the General Government a 

 report on the forests and forest wealth of the country. In the prepara- 

 tion of this report he was obliged to travel into all the forest regions of the 

 country and to select as assistants the men living in different parts of the 

 United States best equipped with knowledge of trees and forests. Among 

 these assistants the Arboretum found friends who continued to help it 

 during the remainder of their lives and to keep it in constant communica- 

 tion with all parts of the United States. 



During the last forty years the Arboretum has lost no opportunity to 

 increase the number of species of plants cultivated in the United States 

 and Europe. Its officers and agents have continued to explore the forests 

 of North America; they have visited every country in Europe, the Cau- 

 casus, eastern Siberia and Korea, and have studied every species of tree 

 growing in the forests of the Japanese Empire from Saghalin to the moun- 

 tains of Formosa. The most successful of all plant collectors, Mr. E. H. 

 Wilson, now Assistant Director of the Arboretum, has gathered for it seeds 

 and other material of the trees and shrubs and of the Lilies that grow in 

 great variety on the mountains which rise from western China to the Tibetan 

 Plateau. Agents of the Arboretum in pursuit of knowledge and material 

 have visited the Malay Peninsula, Java, the Himalayas, the high moun- 

 tains of east tropical Africa, southern Africa, Australia, Mexico, Peru, Chile 

 southward to Terra del Fuego, and the Falkland Islands. One of the results 

 of these journeys of the last forty years is the introduction into the United 

 States of the plants named in the following list. Those which are pre- 

 ceded by a cross are hybrids, and those preceded by an asterisk are believed 

 to have been first introduced into cultivation by the agency of the Arbore- 

 tum. 



*Abelia Engleriana; *A. Graebneriana; *A. longituba; *A. parvifolia; 

 *A. Schumannii; *A. Zanderi. 



Abies chensiensis; A. concolor; A. Delavayi; A. Fargesii; *A. Faxoni- 

 ana; A. grandis (hardy form from Idaho); *A. holophylla; A. homolepis 

 var. umbellata; A. koreana; A. lasiocarpa var. Beissneri; *A. recurvata; A. 

 sachalinensis ; *A. sachalinensis var. Mayriana; *A. sachalinensis var. 



