The extremity of the tail in some American monkeys has been converted into a wonderfully perfect prehensile organ, and serves as a fifth hand.

一些美国猴子的尾巴末端已经变成了一个非常完美的抓握器官， 并作为第五只手。

We shall, also, presently see that the tail is a highly useful prehensile organ to some of the species; and its use would be much influence by its length.

不久我们还将看到， 尾巴对于某些物种来说是一种非常有用的抓握器官； 它的使用会受到它的长度的很大影响。

It is, however, possible that the long tail of this monkey may be of more service to it as a balancing organ in making its prodigious leaps, than as a prehensile organ.

然而，这只猴子的长尾巴可能在其惊人的跳跃中作为平衡器官比作为抓握器官更有用。