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U. S. DEPARTMENT OF AGRICULTURE.


FARMERS' BULLETIN No. 67.


FORESTRY FOR FARMERS.

BY

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.

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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 theYearbooks 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 oftrees, the planting of a forest, treatment of the wood lot, the cultivation of thewood crop, influence of trees, etc. A wider distribution of this information, forwhich there is still considerable demand, would, I believe, result in acquaintingfarmers 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 grow3
    Food materials and conditions of growth3
    Soil conditions4
    Light conditions6
    Physiology of tree growth9
    "Sap up and sap down"10
    Progress of development11
    Growth in length and ramification11
    Growth in thickness14
    Form development17
    Rate of growth19
    Reproduction...

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