Besides the fact that organic Naturein its free.domcan divest its forms of these characteristics, and of necessi ty everywhere presents exceptions to such laws, or rules as we might call them, the characteri ationofthe creatures to which they do applyissosuperficial that even the necessity ofthe laws cannot be other than superficial, and amounts to no more than the greatirifluence of environment; and this does not tell us what does and what does not strictly belong to this influence.