The physical properties of the alcohols exhibit a gradation with the increase of molecular weight.
The meaning of this singular contrast between the two animals may be that we have here an instance of an interesting gradation in evolution.
3 In some cases a piece of land is only an island at high water, and by imperceptible gradation the form passes into a peninsula.
They are soft and lustrous, with a peculiarly smooth feel, and though often confounded with mica-schists may be distinguished by their richness in magnesia; many of them contain tremolite or actinolite; others have residual grains of olivine or augite; and here also every gradation can be found between the unmodified igneous types and the perfectly metamorphic schists.
From this there is a more or less nearly complete gradation on the one hand to palecoloured forms like the white-footed fox (V.