. Defects in timber caused by insects. Wood; Forest insects. DEFECTS IN TIMBER CAUSED BY INSECTS 21. Fig. 23.—A, grub holes in overcup oak. made by the Parandra borer (Parandra brunnea) near Vieksburg, Miss. ; B, grub holes in soft maple made by the Parandra borer in Maryland. 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 Snyder, Thomas Elliott, b. 1885. Washington, D. C. : U. S. Dept. of Agriculture

---

Size: 1348px × 1854px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookdecade1920, bookpublisherwa, booksubjectwood