. Bulletin - Biological Survey. Zoology, Economic. 66 WOODPECKERS IN RELATION TO TEEES. mers Island, Md. It is evident that considerable loss may be occa- sioned by the work of sapsuckers on red cedar. (Specimens from Plummers Island, Md.; Kanawha Station, W. Va. (H.); IUinois (F. 26487); and Florida (A. M. 417).) Species of Pinace^j blemished.âWhitebark pine, nut pine, bull pine (by Williamson sapsucker, H. 8516), lodgepole pine, long-leaf pine, pitch pine (H.) (PI. XI, fig. 2), scrub pine, red spruce (H.), Engelmann spruce, weeping spruce, tideland spruce, eastern hemlock (H.), western hemlo
. Bulletin - Biological Survey. Zoology, Economic. 66 WOODPECKERS IN RELATION TO TEEES. mers Island, Md. It is evident that considerable loss may be occa- sioned by the work of sapsuckers on red cedar. (Specimens from Plummers Island, Md.; Kanawha Station, W. Va. (H.); IUinois (F. 26487); and Florida (A. M. 417).) Species of Pinace^j blemished.âWhitebark pine, nut pine, bull pine (by Williamson sapsucker, H. 8516), lodgepole pine, long-leaf pine, pitch pine (H.) (PI. XI, fig. 2), scrub pine, red spruce (H.), Engelmann spruce, weeping spruce, tideland spruce, eastern hemlock (H.), western hemlock, Douglas fir, Abies concolor, A. grandis, A. amabilis, A. magnified (fig. 15), A. nobilis, big tree, bald cypress, incense cedar, canoe cedar, Monterey cypress, Macnab ! cypress, white cedar (H.), desert juniper, western juniper, and northern red cedar. Fig. 14.âEffects of sapsucker work on wood of red cedar Uuiiipcius virgin*- ana). Radial anil tangential sections. (From Hopkins.) THE POPLARS AND WILLOWS (sALICACE^E). The defects due to sapsucker work on poplar vary from small, slightly stained checks to large open knotty cavities, bordered or partly filled with de- cayed wood. Sometimes these checks cause the de- velopment of adventitious buds, thus making true knots. Over these, as well as over the normally healed pecks, are curls in the grain, which in some cases are dupli- cated through a great many an- nual layers (fig. 16). These or- nament the wood, but it is doubtful if 1 hey counterbalance the disadvan- tage of the m a. n y large checks. The latter unfit the wood of black cot t on wood, tacmahac, and Carolina poplar for one of its principal uses-the manufacture of tubs, barrels, and Iâ '!(.. 15.âEffects of sapsucker work on wood of red fir (Abies magnifica). checks, stains, gnarled and curled Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance
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