The rubber tree book . Diagram of Cross-section through Untapped Stem (Outer Part)?of a Six-year-old Hevea. (Magnified 12 times.) B, Barkproper. St, Groups of hardened cells in cortex. MR,Layers of laticiferous vessels in cortex. C, Cambium. G,Some of water-conducting vessels in c Diagram of Radial (Longitudinal) Section of Stem in sameTree. (Magnified 12 times.) B, Bark proper. St,Groups of hardened cells in cortex. MR, Layersof laticiferous vessels in cortex. C, Cambium. M. n^B

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Keywords: ., bookcentury1900, bookdecade1910, bookidrubbertreebo, bookyear1913