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Keywords: The Oak (Marshall Ward) Fig 5.jpg en Fig 5 ”A Transverse section of young root under a lens showing the axis cylinder a; epidermis or piliferous layer e; and the cortex between B The same more highly magnified c cortex; p phloëm ; x xylem; C A portion still more highly magnified ph phloem; p pith; per pericycle; sh sheath endodermis ; other letters as before 1892 The Oak A Popular Introduction to Forest-Botany H Marshall Ward PD-old-100 The Oak Marshall Ward |