PUBLICATIONS OF THE NATIONAL COMMITTEE ON WOOD UTILIZATION

THE MARKETING OF SHORT-LENGTH LUMBER.

This report contains a careful analysis of more than 250 house plans representing the typical small American house and shows that about 20 per cent of the total lumber bill may be purchased in lengths of less than 8 feet, while in actual practice only about 11⁄2 per cent of the lumber is bought in short lengths, the balance (181⁄2 per cent) being cut into short lengths from long lengths on the job. Tables show where these short lengths may be used in building and construction. Price, 10 cents per copy. END-MATCHED SOFTWOOD LUMBER AND ITS USES.

A discussion of the manufacture of end-matched softwood lumber, its handling, storing, and use, with particular reference to building and construction. The report points out an important saving in the use of lumber and installation costs. Price, 5 cents per copy.

SAWDUST AND WOOD FLOUR.

This report gives a detailed description of the known uses of sawdust. together with a description of how this material should be treated and handled. The subject of wood flour (ground sawdust) is given special treatment, mainly with the idea of making the United States independent of foreign supplies of this material. Price, 10 cents per copy. GRADE MARKING OF LUMBER FOR THE CONSUMERS' PROTECTION.

This bulletin explains grade marking as applied to lumber and shows the benefits and economies of specifying and using lumber marked to indicate quality. Price, 10 cents per copy.

SEASONING, HANDLING, AND CARE OF LUMBER, CONSUMERS' EDITION.

First of a series of four monographs on the proper seasoning, handling, and care of lumber. Written from the consumer's point of view. Price, 15 cents per copy.

SEASONING, HANDLING, AND CARE OF LUMBER, DISTRIBUTORS' EDITION.

Second of a series of four monographs on the proper seasoning, handling, and care of lumber. Written from the distributor's point of view. Price, 20 cents per copy.

SEASONING, HANDLING, AND CARE OF LUMBER, FABRICATORS' EDITION.

Third of a series of four monographs on the proper seasoning, handling, and care of lumber. Written from the fabricator's point of view. Price, 25 cents per copy.

SURVEY OF NON UTILIZED WOOD IN VIRGINIA.

The first report of a national survey, to be conducted by States with the cooperation of State officials and agencies, to determine the kind, character, and quantity of nonutilized wood available in each State for manufacture of by-products. Outlines the special quantity of each type of material which may be used by new or already established industries, with data on transportation facilities and other factors bearing upon economical utilization of wood which is usually wasted. Includes a discussion of the occurrence of waste, gives suggested methods for profitable use of this material, and lists the names of firms or persons which have such material for sale. Price, 20 cents per copy.

SEASONING, HANDLING, AND CARE OF LUMBER, MANUFACTURERS' EDITION.

Last of a series of four monographs on the seasoning, handling, and care of lumber. Written from the lumber producer's point of view. (In press.) (The above publications are for sale by the Superintendent of Documents, Government Printing Office, Washington, D. C. Special rates for purchase in quantity will be furnished on application.)

Economic importance of brown stains.

Yard brown stain__

Kiln brown stain..........

Moisture transfusion theory

Concentration of stain__.

Test with blotting paper.

Prevention of kiln brown stain.

Brown sap stain__

Key for the identification, by color, of brown stains in wood.

Stains produced by fungi..

Blue stain__.

Cultural characters..

Grayish-olive stain of hardwoods.

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12

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15

15

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21

21

Yellow stain of hardwoods.

22

Red stain of box elder__

24

Grayish-black stain of ash

27

"Mineral streak" of maple.

27

Key for the identification, by color, of wood stains caused by fungi__

Longevity of blue-stain fungi in wood and the effect of heat

Method for determining the strength of soda dip solution..

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NATIONAL COMMITTEE ON WOOD UTILIZATION

R. P. LAMONT, Chairman.

R. Y. STUART, Forester, United States Forest Service, vice chairman,
AXEL H. OXHOLM, director.

DUDLEY F. HOLTMAN, construction engineer.

EDWARD EYRE HUNT, secretary.

The National Committee on Wood Utilization, established by direction of President Coolidge, comprises about 150 members, representing manufacturers, distributors, and consumers of forest products. Its object is to work for closer utilization of our country's timber resources. The committee, whose headquarters are in the Department of Commerce, Washington, D. C., works in close cooperation with a number of official and private organizations, notably the Bureau of Standards of the Department of Commerce and the Forest Products Laboratory of the Forest Service, Department of Agriculture.

FOREWORD

Sap stain and decay are among the most important causes of wood waste. These causes may be removed in most instances through proper piling, seasoning, and handling, although in some instances special treating methods may be required.

Doctor Hubert, formerly assistant pathologist at the Forest Products Laboratory, has for a number of years given this subject detailed study from a practical as well as a scientific point of view. He has demonstrated his interest by offering this manuscript to the National Committee on Wood Utilization for publication.

This bulletin is not only of interest to lumbermen, but also to anyone who uses wood and for whom the prevention of sap stain and decay is an important question.

The committee is greatly appreciative of the assistance Doctor Hubert has given on this important phase of wood utilization work. Acknowledgment is also made to the Forest Products Laboratory, John Foley, Dr. Thomas E. Snyder, Phillips A. Hayward, and others who have assisted in reviewing the manuscript.

JUNE 15, 1929.

AXEL H. OXHOLM, Director.