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Updated: May 28, 2025
Ammonia is a compound of nitrogen and hydrogen, and is formulated NH , and hence to discover ammonia in the products as mentioned is to prove the prior existence of its nitrogen in the wool, fur, and hair fibres. Action of Acids on Wool, etc. Used in the concentrated state, however, the wool or fur would soon be disintegrated and ruined.
Just suppose two ammonia groups, NH and NH . If we rob those nitrogen atoms of their hydrogen atoms, we should leave two unsatisfied nitrogen atoms, atoms with an exceedingly keen appetite represented in terms of hydrogen atoms as N * and N *. We might suppose a group, though of two N atoms partially satisfied by partial union with each other, thus N:N . Now this group forms the nucleus of the azo-colours, and if we satisfy a nitrogen at one side with an aniline, and at the other with a phenol, or at both ends with anilines, and so on, we get azo-dyes produced.
Symbols and ratios carry us and bring us forth and beat us down; gravity, that swings the incommensurable suns and worlds through space, is but a figment varying inversely as the squares of distances; and the suns and worlds themselves, imponderable figures of abstraction, NH and H O. Consideration dares not dwell upon this view; that way madness lies; science carries us into zones of speculation, where there is no habitable city for the mind of man.
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