It forms a dark-violet precipitate which dries to a greyish-violet powder.
The sun dries the window too fast and causes more streaks.
In course of time it dries up, leaving nothing but a brown scale adhering to the bottom or side of the cell.
The acacias and the Rosaceae yield their gums most abundantly when sickly and in an abnormal state, caused by a fulness of sap in the young tissues, whereby the new cells are softened and finally disorganized; the cavities thus formed fill with liquid, which exudes, dries and constitutes the gum.
That which dries on the incisions in the tree is called " bola " or " burucha," and is said to be highly prized in New York.
