105 



to l)c'(luo ''to differences of market facilities and intensity of manage- 

 iiuMit, and also to forest conditions:" 



Conntries. 



Prnaaia 



ISiivaria 



Wiiiti^niberg. . 



Saxony 



Itailoii 



City of Zurich 



Forest, 

 area. 



A cres. 



6, 000, 000 



2, 300, 000 



470, 000 



41C, 000 



2;i5, 000 



2, 700 



Total ox- 

 Iiciiditiire. 



Kovenuo. 



Gross. 



Net. 



Exponditurca and revonuev por acre 

 of forest. 



Expenditures. 



$8, 000, 000 $14, 000, 000 $0, 000, 000 $1. 33 



3, 150, 000 5, 880, 000 2, 730, 0(1(1: 1. 37 



1,025, OOOj 2, 2Go, 0011 1, 23.'., 0(l(l| 2. 17 



1,040, OOOl 2,750,000 1,710,500 2.50 



404, OOO: 1,090,00(1, 080,000 1..^.4 



14,0001 26,000 12,000 5.00 



Perot. 



58 

 53 

 45 

 37 

 40 

 54 



.2 o. 



$0. 48 $0. 30 .$0 14 $0. OG $0. 90 



0.C4| 0. 37j 0.11 0.11 i.m 



0.87 0,92 0.22 0.23 2.0:! 



0.05 O.Kl 0. 11 0.21 4. 11 



0.22 0.83 0. 15, 0.12! 2.90 



1. 141 2. 10 0. 10' 1. 14, 4. 40 

 I I 



In tlie chapter on forest planting in a treeless conntry, the topics 

 considered are, forest cover and moisture, need of cooperative action, 

 liow to plant, relation of tree growth to light, how to mix species of 

 trees, conifers, methods of planting, and forest planting as a work of 

 internal improvement. The general principles on which experiments 

 in tree ])lanting on the plains should be made are summed up as fol- 

 lows : 



(1) Forest plantations in largo blocks have more chance of succes.s tliaii small clumps 

 or sinplo trees, since largo plantations alone are capable of becoming sell-aiistaining 

 and of improving their conditions of growth hy their own iiilluenco upon moisture 

 conditions of the soil and air. 



(2) We must not only plant densely (much more densely than is the common prac- 

 ti(^e), but in the selection of kinds giv(> predominance to such a.s are capable of 

 <|uickly and persistently shading the ground, creating an undergrowth and cover 

 that will prevent evaporation, and thus make possible the planting of the light- 

 foliaged, quick-growing, Valuable timbers. 



Twelve kinds of trees used in prairie planting are grouped as follows, 

 according to their shade endurance, and their rate of height growth 

 during their youth : 



As io Khnde. 



(1) Box elder. 



(2) Mulberry. 



(3) Elm. 



(4) Hlack cherry. 



(5) Osage oraugo. 



(6) Catalpa. 



(7) Soft maple. 



(8) Locust. 



(9) Honey locust. 



(10) Black walnut. 



(11) Ash. 



(12) Cottonwood. 



Js to rate of height f/rowth. 



(1) Cottonwood. 



(2) Soft maple. 



(3) Elm. 



(4) Locust. 



(.■3) Houey locnst. 



(6) Black cherry. 



(7) Catalpa. 



(8) Osage orange. 



(9) Box ebler. 



(10) Black walnut. 



(11) Ash. 



(12) Mulberry (f). 



