Phellogen is replaced by successive new phellogenic layers of de~per and deeper origin, each forming its own layer of cork.
The complex system of dead and dying tissues cut off by these successive periderms, together with the latter themselves in fact, everything outside the innermost phellogen, constitutes what is often known botanically as the bark of the tree.
Successive nations perchance have drank at, admired, and fathomed it, and passed away, and still its water is green and pellucid as ever.
I have in my mind's eye the western, indented with deep bays, the bolder northern, and the beautifully scalloped southern shore, where successive capes overlap each other and suggest unexplored coves between.
Thus for a dash the interval between the positive and the negative current is equal to the time the paper takes to travel over twice the space between two successive holes.