The Niata cattle in South America show us how small a difference in structure may make, during such periods, a great difference in preserving an animal's life.

南美洲的 Niata 牛向我们展示了在这样的时期， 结构上的微小差异可能会在保护动物生命方面产生巨大差异。

A still greater number must be called monstrosities, such as six-fingered men, porcupine men, Ancon sheep, Niata cattle, etc.; and as they are widely different in character from natural species, they throw very little light on our subject.

还有更多的人必须被称为怪物， 例如六指人、豪猪人、安康羊、尼亚塔牛等；由于它们在性质上与自然物种有很大不同， 因此它们对我们的主题几乎没有任何启发。