...necessary not only for their own support, but also for sustaining the parts which are to be further added. In trees this process generally occupies one...wood which had been formed during the first year, and to impede its further extension in breadth. But as its fibres, consisting of vessels and cells,...

...vegetation, a new growth commences from the upper end of the original stem, as if it were the development of a new bud: and at the same time a layer of cellular...layer of wood which had been formed during the first yearf and to impede its farther extension in breadth. But as its fibres, consisting of vessels and...

...vegetation, and a new growth commences from the upper end of the original stem, as if it were the development of a new bud ; and, at the same time, a layer of cellular...second layer of wood, enveloping the new layer of eel lular tissue. While this process is going on in the wood, corresponding changes take place in the...

...of the original stem, as if it were the developement of a new bud ; and, at the same time, a layev of cellular tissue is formed by the deposition of...wood, enveloping the new layer of cellular tissue. While this process is going on in the wood, corresponding changes take place in the bark, and a new...

...the process of the first year. In the succeeding spring, a fresh impulse is given to vegetation, and a new growth commences from the upper end of the original...wood, enveloping the new layer of cellular tissue. While this process is going on in the wood, corresponding changes take place in the bark, and a new...

...vegetation, a new growth commences from the upper end of the original stem, as if it were the development of a new bud ; and at the same time a layer of cellular...wood which had been formed during the first year, and to impede its farther extension in breadth. But as its fibres, consisting of vessels and cells,...