. Bulletin - Biological Survey. Zoology, Economic. BLEMISHES IN" SASSAFRAS AND SWEET GUM. 79 and are walled by soft wood. The stains are heavy and may pene- trate one or two layers of wood beneath and five to ten or more layers over the wounds. These defects are exceedingly objectionable and unfit the wood for its limited use in carpentry. Sassafras (Sassafras variifolium).âThe specimen examined is from a tree one side of which had been killed by sapsucker pecking and is now partly covered by new growth. As the wounds themselves have not healed, their appearance where buried by succeeding
. Bulletin - Biological Survey. Zoology, Economic. BLEMISHES IN" SASSAFRAS AND SWEET GUM. 79 and are walled by soft wood. The stains are heavy and may pene- trate one or two layers of wood beneath and five to ten or more layers over the wounds. These defects are exceedingly objectionable and unfit the wood for its limited use in carpentry. Sassafras (Sassafras variifolium).âThe specimen examined is from a tree one side of which had been killed by sapsucker pecking and is now partly covered by new growth. As the wounds themselves have not healed, their appearance where buried by succeeding layers of wood is unusual. Along the plane of separation of the new and dead wood are long series of partly filled blackened pecks, with stain all along the line (PI. XI, fig. 5). The wood covering the pecks is gnarled and full of stained cracks and is worthless for any construc- tive purpose. California laurel (Umbel- lularia calif or - nica). ââ Defects resulting from sapsucker work are conspicuous black checks ac- companied by extensive lateral staining and much gnarly wood They are highly objectionable in this valuable Efiects of sapsucker work on wood of red bay (Persea borbonia). Stains, checks, and long fissures. THE SWEET GUM FAMILY (aLTINGIACE^e) . The wood of the single native species of this family is injured by sapsuckers. Sweet gum (Liquidambar styraciflua).âIn a specimen from Abbe- ville, La., transverse black stains three-eighths inch wide surround the healed punctures, from which brown stains penetrate the grain vertically half an inch each way. These blemishes are objectionable from an ornamental standpoint but not materially so otherwise. In a trunk from the Santee Club, South Carolina, besides stains which. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Bureau o
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