1925J SARGENT, NOTES 213 



Vol. iv. (continued.) 



Fasc. 6. signatures 41-48, pp. 161-192, pi. 6. 



7. " 49-56, " 193-224, " 7. 



8. " 57-64, " 225-256, " 8. 



9. " 65-72, " 257-288, " 9. 

 " 10. " 73-80 " 289-319, " 10. 



1869 



Prolusio Florae Japonicae. Miquel's Prolusio florae japonicae pub- 

 lished first in the Annales was also issued as a separate work which bears 

 on its title-page the date 1866-1867. One part of the Prolusio was pub- 

 lished together with Musci frondosi by C. M. Van der Sande Lacoste in 

 the Annales toward the end of 1866; this part constitutes the end of the 

 first half of the separate edition of the Prolusio. A special note at the 

 foot of page 188 indicates the end of the first half which contains plate 

 I. The second half was published in 1867; it begins with Ranunculaceae 

 and contains plate n. 



NOTES. 

 The Arnold Arboretum Expedition to North Central Asia. — In 



northern Kansu, the northwestern province of China, there is a high 

 mountain region which appears on the map as the Richthofen Range and 

 south of this in northern Tibet there is another region of high mountains 

 (the Amne Machin Range). These two regions are botanically of special 

 interest, for judging by their altitude and latitude the plants which clothe 

 these mountain slopes should flourish in the northeastern United States 

 and Canada, and in northern Europe and northern Japan. The interest in 

 the botanical exploration of these regions is greatly increased by the fact 

 that they are in the only part of the northern hemisphere which has not 

 been more or less carefully worked over botanically, and that if there are 

 anywhere new hardy trees they should be found in this part of central 

 Asia. Much also might be learned here of the northern distribution of 

 some of the important trees which grow farther south on the Chinese- 

 Tibetan border. 



During the summer of 1924, Mr. J. F. Rock, 1 the distinguished traveler 



1 Joseph F. Rock was born in Vienna, Austria, about forty-six years ago. As a boy he 

 showed wonderful aptitude for acquiring languages by learning Chinese and Arabic, and 

 early developed his love of travel by a journey with his father to Egypt. Nothing unfor- 

 tunately is known at the Arboretum at this time of his experiences and studies until he 

 reached the Hawaiian Islands, probably in 1907, and received the appointments of Professor 

 of Botany and of Chinese in the College of Hawaii and Consulting Botanist to the Board of 

 Commissioners of Agriculture and Forestry for the Territory of Hawaii. During his stay in 

 Hawaii he devoted himself assiduously to the study of the Hawaiian flora, and during the 

 years 1915-14 made a journey round the world for the purpose of studying Hawaiian speci- 

 mens in American and European herbaria, remaining three months in the United States where 

 he worked chiefly in the Gray Herbarium. His principal collection of dried Hawaiian plants 

 is preserved in the herbarium of the College of Hawaii, but there is a large collection of du- 

 plicates in the Gray Herbarium and a very complete set of the indigenous woody Hawaiian 

 plants in the herbarium of the Arboretum. He left Hawaii late in 1919 or early in 1920, and 

 waa in Washington in August of that year when he was employed by the Department of 



