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The timber pines of the southern United States, Washington, Govt. Print, 1896, pinus, southern states, wood., A series of detailed botanical illustrations depicting various cross-sections and tangential sections of pine tree tissues, showcasing intricate cellular structures. The left side features a labeled diagram with letters indicating different parts (c.l., tr., rd., p.d., etc.), while the right side presents several enlarged views of the woody tissue, including resin ducts, tracheids, and fiber cells. Each section is meticulously illustrated to highlight the characteristics of the plant anatomy, providing a clear visual reference for understanding the composition and arrangement of pine wood. The overall layout is organized in a way that facilitates comparison between the different sections. (Photo by: Sepia Times/Universal Images Group via Getty Images)