214 JOURNAL OF THE ARNOLD ARBORETUM (vol. vi 



and botanist, came to the Arboretum to discuss Chinese explorations and 

 was enthusiastic about the exploration of the Richthofen and Amne Machin 

 Ranges and willing to undertake it. 



The Arboretum was fortunate in being able to make a satisfactory ar- 

 rangement for this expedition in which the Harvard Museum of Com- 

 parative Zoology joined in the hope of obtaining additions from this un- 

 known region for its ornithological collection. 



Rock sailed from San Francisco on September 30th. He had intended to 

 go first to Peking to discuss his plans with some of the Chinese officials and 

 some of the Americans established there, but political conditions in the 

 Chinese capital at this time caused him to give up this plan and he went by 

 Shanghai and Hongkong to Haiphong in Tonkin where he arrived on the 

 5th of November. By rail he went to Yunnan-fu where he was able to 

 gather the skilful collectors and cook who had already been with him in 

 China and who accompanied him northward. From Yunnan-fu his long 

 journey northward by mule commenced. Few men could have survived 

 the dangers and hardships of this journey and retained their cheerfulness 

 and hope of future success. The party was constantly attacked by bri- 

 gands and with difficulty obtained military protection from the govern- 

 ment. From Suifu in the Province of Szechuan, Rock wrote on January 



27th, 



''After an exasperating trip through a country suffering from famine, we arrived 

 hale and hearty in Suifu. In Chaotung I was delayed ten days by terrible snow- 

 storms. It snowed for nine days and nights without interruption, and as the trail 



Agriculture to visit Burma, Assam and Siam in order to obtain knowledge and material of the 

 Chaulmoogra Tree (Taraktogenos Kurzii King), the oil of which is reported a cure for leprosy. 

 This duty finished, he devoted himself, under the auspices of the National Geographic Society 

 of the United States, to exploring the natural history of the southern Chinese Province of 

 Yunnan, returning from China to Washington in the spring or early summer of 1924. 



Mr. Rock is the author, with Dr. L. Radlkofer of Munich, of "New and Noteworthy 

 Hawaiian plants" published by the Board of Agriculture and Forestry, Territory of Hawaii, 

 in 1911, "The Indigenous trees of the Hawaiian Islands," with 215 photo-engravings, published 

 under patronage, in Honolulu in 1913, "Palmyra Island, with a description of its flora," with 

 the cooperation of O. Beccari and others, being Bulletin No. 4, College of Hawaii Publications, 

 1916, "The Ornamental Trees of Hawaii," with 79 photo-engravings and 2 colored plates, 

 published under patronage, Honolulu 1917, "A monographic study of the Hawaiian species of 

 the Lobelioideae, family Campanulaceae," in the Memoirs of the Bernice Pauahi Bishop 

 Museum, volume vii, No. 2, Honolulu 1919. Articles by Rock illustrated by his own photo- 

 graphs are entitled, — "Notes upon Hawaiian plants with descriptions of new species and 

 varieties," with 5 plates, published in Honolulu 1911, " Descriptions of new species of Hawaiian 

 plants," published in "The Hawaiian Peperomias" in 1913, "List of Hawaiian names of 

 plants," published by the Board of Agriculture and Forestry, Honolulu 1913, "The Sandal- 

 woods of Hawaii," published by the Board of Agriculture and Forestry, Honolulu 1916, 

 "The Ohia lehua trees of Hawaii," published by the Board of Agriculture and Forestry, 

 Honolulu 1917, "The Hawaiian genus Kokia, a relative of the cotton," published by the 

 Board of Agriculture and Forestry, Honolulu 1919, "The Arborescent indigenous legumes of 

 Hawaii," published by the Board of Agriculture and Forestry, Honolulu 1919, " The Leguminous 

 plants of Hawaii," published by the Experiment Station, Honolulu 1920, "The Chaulmoogra 

 tree [Taraktogenos Kurzii] and some related species," published by the U. S. Department of 

 Agriculture, Washington 1922, four articles published in the "National Geographic Magazine" 

 entitled, — "Hunting the Chaulmoogra tree," March 1922, "Banishing the devil of disease 

 among the Nashi," November 1924, "The Land of the Yellow Lama," April 1925, and "Ex- 

 periences of a lone geographer," September 1925; also "Field notes of the Rhododendrons 

 collected in 1928-4," printed from manuscripts in the possession of the U. S. Department of 

 Agriculture by Lionel de Rothschild. These publications can be seen in the library of the 

 Arboretum. 



