Chemistry of pulp and paper making . stored in the yard decay but ground wood stored in lapsalso suffers damage which is estimated by the Forest Serviceto amount to between five and fifteen million dollars a decay of wood stored in piles depends on the size and formof the pile, upon temperature and humidity and upon the foun-dation upon which the pile is built. Small piles of evenlystacked wood will not decay because they are well ventilatedand dry out readily. Neither will the wood in the interior oflarge piles because it is too wet; but between these two ex-tremes is a condition whe
Chemistry of pulp and paper making . stored in the yard decay but ground wood stored in lapsalso suffers damage which is estimated by the Forest Serviceto amount to between five and fifteen million dollars a decay of wood stored in piles depends on the size and formof the pile, upon temperature and humidity and upon the foun-dation upon which the pile is built. Small piles of evenlystacked wood will not decay because they are well ventilatedand dry out readily. Neither will the wood in the interior oflarge piles because it is too wet; but between these two ex-tremes is a condition where the moisture is just right and thefungi flourish wonderfully. The summer, with its high tem-peratures, is the time when most of the decay takes place andpractically no loss is suffered in winter. The following photomicrographs show the characteristic forms and markings of anumber of the typical paper-making fibres. These photomicrographs, as well asthose in Chapter X, were prepared by the Paper Section of the Bureau of Cotton (Gossypium.) Magnification loo diameters. Photographed byBureau ot Standards.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectpaperma, bookyear1920
