Make the Acquaintance of 



TUCSON 



THE METROPOLIS OF ARIZONA AND NEW MEXICO 



Both the oldest and the 

 newest City of the Southwest 



It combines the picturesqueness of its ancient missions and the quaintness of its Mexican quarter 

 with the modern features of a progressive American City. 



It is an important railway and banking centre, a wholesale distributing point, the focus of a rich 

 mining and grazing region, and an agricultural oasis of a unique and successful character. 

 It is the seat of the University of Arizona, the State Agricultural Experiment Station, the 

 Desert Laboratory of the Carnegie Institution, the Magnetic Observatory of the Coast and 

 Geodetic Survey, and other state and national institutions. 



The environs of Tucson are extremely attractive, in its setting of lofty and rugged mountains. 

 The excellent roads make it easy to visit the numerous localities of historic and prehistoric 

 interest, and to enjoy the varied natural features of the surrounding region. Desert valleys, 

 grassy plains, groves of oaks and forests of pines are all available by automobile and pack train 



The hunting is good The botanizing is good 



The summer is more comfortable in Tucson 

 than it is in New York or Washington 



Illustrated booklets and information will be gladly furnished to you and your friends 



THE CHAMBER OF COMMERCE TUCSON, ARIZONA 



EFFICIENCY 



The Principles of Scientific Shop Management are Applied by us to the 



Printing Business 



We manufacture this Journal. In addition we produce 25 other scientific and technical publications 



and a large number of books and catalogues. 



All are handled on a definite schedule maintaining the highest standard of mechanical workmanship. 



WAVERLY PRESS 



WILLIAMS & WILKINS COMPANY Baltimore, Md„ U. S. A 



CHINESE PLANTS 

 FOR EXCHANGE 



The BiologyTDepartment of the Canton Christian College has duplicate 

 sets of the flora of South ChiDa which they will be pleased to exchange 

 for herbarium specimens or botanical literature. 



Address C. W. HOWARD, Professor of Biology, 



Canton Christian College, 



Canton, China 



