Keywords: The Oak (Marshall Ward) Fig 38.jpg en Fig 38 ”Transverse section of wood of oak magnified five diameters showing five annual rings as denoted by the large vessels of the spring wood; the vessels become smaller in the summer and autumn wood and are arranged in tongue-like groups Nine broad medullary rays are shown the rest are very narrow cf Fig 27 The rest of the section is filled with tracheids fibers and wood-parenchyma Müller 1892 The Oak A Popular Introduction to Forest-Botany H Marshall Ward PD-old-100 The Oak Marshall Ward |