428 ELEMENTARY STUDIES IN BOTANY 



the order of total size of area in each state : California, nine 

 reservations, 8,750,000 acres ; ' Washington, three reserva- 

 tions, 7,000,000 acres ; Arizona, four reservations, 5,000,000 

 acres ; Oregon, three reservations, 4,750,000 acres ; Montana, 

 three reservations, 4,500,000 acres ; Idaho and Montana, 

 one reservation in common, 4,000,000 acres ; Wyoming, four 

 reservations, 3,250,000 acres ; Colorado, five reservations, 

 3,000,000 acres; New Mexico, two reservations, 2,750,000 

 acres ; South Dakota and Wyoming, Black Hills reserva- 

 tion, 1,200,000 acres; Utah, three reservations, 1,000,000 

 acres ; Idaho and Washington, one reservation in common, 

 650,000 acres ; Alaska, one reservation, 400,000 acres ; 

 Oklahoma, one reservation, 60,000 acres. This list includes 

 41 reservations set apart as forests ; but since 1901 the 

 amount of reservation has been very much increased, the 

 total area in 1912 approximating 190,000,000 acres. An 

 illustration of the increase can be obtained from Alaska, 

 whose area of reservation increased from 400,000 acres in 

 1901 to 27,000,000 acres in 1912. 



133. Street trees. Even though the reader of this book 

 may not have access to a forest, where forest conditions can 

 be observed, he can at least observe trees growing in yards 

 or along streets. In fact, the study of trees, even in cities, 

 is not only possible, but interesting and profitable. There is 

 nothing more neglected than street trees, and it will be helpful 

 if school pupils are taught to know something about their care. 



The streets fitted for tree-planting usually provide a 

 planting strip between the sidewalk and the curb ; and in a 

 very wide street a parking strip in the middle is often seen. 

 Much street planting has been done independently by the 

 owners of different lots, so that the trees are of various kinds 

 and the result is a ragged appearance. If possible, a reason- 

 able uniformity in the kind of tree used improves the ap- 

 pearance of a street very much. Not only should the trees 

 be of the same kind, but their spacing should be uniform, 



