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Updated: May 19, 2025
Indigo is such a dye, and so are Magenta, Aniline Black, Aniline Violet, picric acid, Ultramarine Blue, and so on. Ultramarine is not, it is true, confined to blue; you can get Ultramarine Green, and even rose-coloured Ultramarine; but still, in the hands of the dyer, each shade remains as it came from the colour-maker, and so Ultramarine is a monogenetic colour.
As to this question, we may hope for a future solution in the monogenetic sense: we may rejoice over the fact that, according to the present state of knowledge, the needle of the scale rather inclines in favor of a oneness of origin of mankind; but we must also be prepared to accept the possibility of a contrary result, without being afraid that in such a case we should have to abandon at once that religious factor for whose sake the advocates of a monogenetic descent might defend their view.
Monogenetic means capable of generating one. These bodies require a special treatment to bring out or develop the colours, for there may be several that each is capable of yielding. We may consider them as colour-giving principles, and so we term them polygenetic colours. Polygenetic means capable of generating several or many.
In the various colours and dyes we have all phases, and the monogenetic shades almost imperceptibly into the polygenetic.
The mode of application of the two classes of colours is, of course, in each case quite essentially different, for in the case of the monogenetic class the idea is mainly either to dye at once and directly upon, the unprepared fibre, or having subjected the fabric to a previous preparation with a metallic or other solution, to fix directly the one colour on that fabric, on which, without such preparation, it would be loose.
Here we have, as proved by our experiments, two distinct classes of colouring matters. The one class comprises those which are of themselves the actual colour. The colour is fully developed in them, and to dye a fabric they only require fixing in their unchanged state upon that fabric. Such dyes are termed monogenetic, because they can only generate or yield different shades of but one colour.
For this reason systematic spiritual study commences with the contemplation of the existing cosmos, and we then transfer the conception of the monogenetic power of the Spirit from the cosmos to the individual and realize that the same Spirit is able to do the same thing in ourselves.
But, we must ask, is the only conceivable reality of this basis a monogenetic pedigree, and do we lose this reality if science should once find that mankind came into existence not only in one single pair, but in several pairs, even in different places, and at different times?
I described experiments to illustrate what we mean by monogenetic and polygenetic colours, and indicating that the monogenetic colours are mainly included in the group of substantive colours, whilst the polygenetic colours are mainly included in the adjective colours. I also said there was a kind of borderland whichever mode of classification be adopted.
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