The most perfect of the polished pavements and walls lie at an elevation of from 7000 to 9000 feet above the sea, where the rock is compact silicious granite.

最完美的抛光路面和墙壁位于海拔 7000 至 9000 英尺的高度，那里的岩石是致密的硅质花岗岩。

The cones are about four inches long, exceedingly hard, and covered with a sort of silicious varnish and gum, rendering them impervious to moisture, evidently with a view to the careful preservation of the seeds.

球果大约有四英寸长，非常坚硬，上面覆盖着一种硅质清漆和树胶，使它们不受潮，显然是为了小心保存种子。