Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 510
the processes of vegetation producedby seasonal changes,—as by heat and drought in a tree that flou-rishes best in a cold damp atmosphere, or by a fall of temperaturein a tree that requires heat,—would appear from the frequencywith which a double or even a multiple succession of rings is foundiu… … Portion of Transverse Section of Stem of Hazel, showing, in the portiona, 6, c, six narrow layers of Wood. the ordinary thickness there intervenes a band whose breadth isaltogether less than that of either of them, and which is yet com-posed of no fewer than six layers, four of them (e) being…
Microscopy · Biology
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