164 JOURNAL OF THE ARNOLD ARBORETUM [VOL. in 



Director brought back from Japan a collection of about one thousand 

 specimens. It was later enriched by the specimens collected in Japan, 

 northern China and Korea by Mr. J. G. Jack of the Arboretum staff, by 

 Purdom, Meyer, Sargent and Hers in northern China, by Henry in western 

 China, by the collections of E. H. Wilson in western China, Korea and the 

 entire Japanese Empire of about 8500 specimens, by the specimens collected 

 by C. Schneider in southwestern China, and by several collections of the 

 plants of the Philippine Islands made under the direction of the Philippine 

 Bureau of Science. 



The herbarium contains several collections made from trees and shrubs 

 cultivated in Europe. The most important of them were made by Mr. 

 George Nicholson in the Royal Gardens at Kew, by Dr. C. Naudin at the 

 Villa Thuret at Antibes in France, by A. Render and C. Schneider chiefly 

 in Germany, and by H. Zabel of Muenden, Germany, containing the types 

 of the numerous species, varieties and hybrids published by him. 



The attempt has been made in the Arboretum herbarium to show in 

 the case of important trees the varieties and range of the species, and from 

 one hundred to three hundred sheets are occasionally devoted to the illus- 

 tration of a single species and its varieties; in the case of trees like Oaks 

 and Hickories the sheets are accompanied by many bottles of nuts. 



The Pinaceae is the family best represented in the Arboretum her- 

 barium. All the genera and all the species of this Family are represented 

 with the exception of six Araucarias from New Caledonia, two species of 

 Callitris and three species of Agathis from northern Australia, one Juniper 

 from San Domingo and another from the Azores. Many of the species are 

 represented by long series of specimens and by enough cones to show the 

 range of their variation. 



The herbarium contains the types of nearly all the new Chinese species 

 published by the Arboretum in Plantae Wilsonianae, the new species pub- 

 lished in Garden and Forest, in Trees and Shrubs, and in the Journal of 

 the Arnold Arboretum, and of the new species and varieties of Crataegus, 

 Carya, Quercus, Tilia, Aesculus and other genera published by the Director. 



In its early years the office of the Arboretum and the herbarium and 

 Library were established in a house in Brookline controlled by the Director, 

 but in 1892 Mr. Horatio Hollis Hunnewell, a constant and devoted friend 

 to the Arboretum, as have been his sons, furnished the money for the 

 brick building near the Jamaica Plain entrance, and late in that year the 

 offices for administration, the herbarium and the library were moved into it. 

 This building also contains a collection of specimens of the wood and bark 

 of most of the trees of the United States, a gift with the cases in which they 

 are arranged of the late Morris K. Jesup of New York. In 1905 a fireproof 

 four-storied wing was added to the Administration Building to contain 

 the herbarium which is now arranged in steel cases extending to the ceiling 

 of the low-studded and well lighted rooms conveniently arranged for the 

 study of the specimens. 



