CHANGE OF COLOR • FREE-TRANSLATOR.COM • Definition of Change of color

... seen that sphagnum, and the wood of our forest trees are very similar in composition, though not identical. Further, it is seen from analyses 1 and 5, that in the first stages of the conversion of sphagnum into peat—which are marked by a change of color, but in which the form of the sphagnum is to a considerable extent preserved—but little alteration occurs in ultimate composition; about one per cent. of carbon being gained, and one of hydrogen lost. We notice in running down the columns that as the peat becomes heavier and darker in ...

— Peat and its Uses as Fertilizer and Fuel • Samuel William Johnson