UNITED STATES DEPARTMENT OF AGRICULTURE 
DEPARTMENT BULLETIN No. 1402 
Washington, D. C. 
May, 1926 
TIMBER GROWING AND LOGGING PRACTICE IN THE CALIFORNIA 
PINE REGION 
By S. B. Show, SilvicuJturist, Forest Service 
Introduction by W. B. Gkeeley, Forester, Forest Service 
CONTENTS 
1 
Measures necessary to keep forest 
lands productive"— Continued. 
5 
Grazing on cut-over lands 
Protection against forest in- 
52 
5 
sects and tree diseases 
52 
The returns to ttie landowner 
53 
G 
Summary of essential measures- 
53 
8 
The practicability of the meas- 
ures proposed 
54 
11 
Measures necessary to produce full 
timber crops . 
55 
11 
Conditions affecting private tim- 
12 
ber growing 
55 
Basic principles of full timber 
18 
crop production 
58 
Slash disposal and fire protec- 
oo 
tion 
61 
2-1 
24 
2G 
34 
Piling and burning 
62 
Costs of slash disposal and 
special fire protection — 
64 
Protection against insects and 
64 
64 
34 
36 
Additional measures to in- 
86 
sure best timber growth- 
65 
Additional measures in cutting 
38 
practice 
65 
38 
Selection of seed trees 
66 
39 
Selection of trees to leave 
for growth 
67 
40 
Cutting unmerchantable 
trees 
70 
Cost of cutting restrictions- 
70 
42 
Essential steps in producing 
full timber crops 
71 
The total cost of the measures- 
71 
45 
The opportunities for private 
forestry 
72 
48 
Literature cited -- 
75 
Introduction , 
Measures necessary to keep forest 
lands productive 
The California pine region and 
forests 
R'ole of advance reproduc- 
tion and seed trees 
Problems of the timber owner- 
Fire protection and slash dis- 
posal 
The general protective sys- 
tem 
Slash dis]X)sal 
The need for systematic pro- 
tection of cut-over lands. 
The cost of special fire 
protection measures 
Methods of logging 
Big-wheel yarding 
Donkey yarding 
Skidder yarding 
Tractor logging 
Other methods of yarding — 
Comparative costs of dif- 
ferent logging methods 
Intensity of cutting 
Questions involved 
What is a seed tree? 
Number of seed trees re- 
quired 
Number of seed trees left 
in current cutting prac- 
tice on pi'ivate lands 
Number of seed trees ob- 
tainable with diameter 
limit cutting 
The stumpage investment in 
seed trees 
INTRODUCTION 
Forestr}^ in the United States is no longer merely a theory or a 
subject for discussion; it has gotten down to concrete things in the 
woods. Nor is the growing of timber conhned to public lands; it 
is gradually making headway on land in private ownership. It is 
747220—26 1 1 
