By the tenacity, or force of cohesion, of the fibres: which is one of the forces in nature, and which we can measure exactly against other mechanical forces, and ascertain how much of any of them it suffices to neutralize or counterbalance.

• 靠的乃是纤维的粘性，或内聚力，这是自然界中的一种力，我们能参照其他机械力精确地测定它，并能弄清立足够抵消或抗衡多大的机械力。