The main stem was then in most cases twisted in a zigzag form, which process checked the flow of the sap, and at the same time encouraged the production of side branches at those parts of the stem where they were most desired.
These gardens may be called the gardens of the respectable working classes.
Stunted varieties were generally chosen, particularly if they had the side branches opposite or regular, for much depends upon this; a one-sided tree is of no value in the eyes of the Chinese.
We all know that any thing which retards in any way the free circulation of the sap, also prevents to a certain extent the formation of wood and leaves.
No doubt these rocky islands have suggested the idea worked out in gardens, and they have been well imitated.
A small species of pinus was much prized, and, when dwarfed in the manner of the Chinese, fetched a very high price; it is generally grafted on a variety of the stone pine.