B. E. FERNOW,

Chief of the Division of Forestry.


[Reprinted from the Yearbooks of the U. S. Department of Agriculture
for 1894 and 1895.]

[WASHINGTON:]

GOVERNMENT PRINTING OFFICE.

1898.

LETTER OF TRANSMITTAL.

U. S. Department of Agriculture,
Division of Forestry,
Washington, D. C., December 4, 1897.

Sir: I have the honor to recommend that the two articles contributed by me to the Yearbooks for 1894 and for 1895 on forestry for farmers be reprinted as a Farmers' Bulletin. The articles contain information in popular form regarding the growth of trees, the planting of a forest, treatment of the wood lot, the cultivation of the wood crop, influence of trees, etc. A wider distribution of this information, for which there is still considerable demand, would, I believe, result in acquainting farmers with a subject the importance of which has not always been duly recognized.

Very respectfully,

B. E. Fernow, Chief.

Approved:
James Wilson, Secretary.


[CONTENTS.]


Page.
How trees grow[3]
Food materials and conditions of growth[3]
Soil conditions[4]
Light conditions[6]
Physiology of tree growth[9]
"Sap up and sap down"[10]
Progress of development[11]
Growth in length and ramification[11]
Growth in thickness[14]
Form development[17]
Rate of growth[19]
Reproduction[21]
How to plant a forest[22]
What trees to plant[23]
Methods of planting[26]
How to treat the wood lot[28]
Improvement cuttings[29]
Methods of reproducing the wood crop[31]
Size of openings[34]
Wind mantle[34]
Coppice[35]
Plan of management[37]
How to cultivate the wood crop[37]
Effect of light on wood production[38]
Number of trees per acre[38]
Weeding and cleaning the crop[40]
Methods of thinning[40]
What trees to remove[41]
The relation of forests to farms[42]
The forest waters the farm[44]
The forest tempers the farm[45]
The forest protects the farm[45]
The forest supplies the farm with useful material[46]