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EDITORIAL CHAT

"In Union There is Strength"

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LD as the hills, is the thought in the saying, "United we stand, divided we fall," which is merely another way of entreating a "pull all together," will always apply. It is the combination of skill, strength and force that leads to powerful accomplishment.

This has never been more aptly exemplified than in the present war, the magnitude of which dwarfs all others. Each of the Allied Armies under separate direction would have a force or power equal only to its own numbers, but combined and directed under one experienced head, the aggregate power and advantage is multiplied many fold.

This is true in any movement, whether it be war or industry, for the grouping of resources and effort enable the attainment of power and facilities by which highest achievement is possible.

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Why Wood Warps

(From The Literary Digest)

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ARPING, OR BENDING in one plane, is caused by the application of force in various ways. It may be due to gravity, as when a slab of material is supported at both ends and acquires a permanent "sag" by sinking in the middle. In this sense a piece of stone or metal may warp. The term, however, is usually applied to the bending or curling up of wooden boards because of unequal expansion or contraction on opposite surfaces, due often to variations in the drying of the surfaces or in their absorption of moisture. Hu Maxwell, who writes in The Hardwood Record (Chicago), tells

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"The warping of any material is due to stresses, usually to the pull of a force that is not counteracted by an equal pull in the opposite direction. In wood this pull is commonly caused by shrinkage, and the shrinkage is the result of drying."

Too Much Water Did It

us that such action may be met with nearly anywhere that the material is put to use. He says:

"It is frequent in lumber-yards, particularly if the piling of the lumber has not been carefully attended to. Boards bending upward at the sides and the ends, if free to move, may rise partly from the ground. Finished work may warp as badly as rough boards, for the mere process of planing, sawing, and fitting wood does not guarantee it against warping. Possibly a door refuses to latch because one side has twisted out of plumb, or a window-sash will not slide up and down as it was meant to do, or a table-top presents a distorted appearance, or possibly a piano-top will do the same, and all sorts of paneling may become curled and warped.

"When wood behaves in this manner it is doing nothing new. The handle of the stone hatchet of the

paleolithic man warped as badly, and

A study of warping in detail, Mr. Maxwell goes on to say, involves an examination of the minute structure of the material. In the first place, such structure in wood is very complex. It has been remarked that a modern sky-scraper is not more complex in structure than a half cubic inch of wood magnified to the size of the building. To quote further:

"Wood is composed primarily of cells and other elements, some of which lie with their long axes up and down the trunk, others at right angles to them, extending from the bark toward the center of the tree. Those extending up and down are the most important in the majority of woods, because most numerous, the largest in size, and most vital to the tree's existence. The elements extending from the bark inward belong (Continued on page 86)

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HE railroads cannot carry

coal to you and also handle military supplies in the quickest way. Help by burning less coal.

Coal supplies power for electric light and steam heat. Turn off both when you don't need them. If you can get wood, use it instead of coal.

The United States Government has no intention of taking the preserved fruits and vegetables, or other food supplies of private citizens, either now or at any future time. Any other statement is enemy propaganda to frighten you into withholding your support from the cause of freedom.

THE UNITED STATES FOOD ADMINISTRATION asks you to get behind our soldiers, sailors and associates by sending them now the most food possible in the least shipping space. Every man, woman and child in America can help by eating less wheat, beef, pork, fats and sugar, more of other plentiful foods which cannot be shipped, and by avoiding waste.

EAT PLENTY, WISELY, WITHOUT WASTE,
AND HELP WIN THE WAR

Reprint from material furnished by the
UNITED STATES FOOD ADMINISTRATION

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