the consequence of still progressing augmentation. Red, in which neither yellow nor blue is to be detected, here constitutes the acme.
524.
If we wish to select a striking example of a culmination on the plus side, we again find it in the coloured steel, which attains the bright red acme, and can be arrested at this point.
525.
Were we here to employ the terminology before proposed, we should say that the first oxydation produces yellow, the hyper-oxydation yellow-red; that here a kind of maximum exists, and that then an ab-oxydation, and lastly a de-oxydation takes place.
526.
High degrees of oxydation produce a bright red. Gold in solution, precipitated by a solution of tin, appears bright red: oxyde of arsenic, in combination, with sulphur, produces a ruby