The main attention in the production of these colors is directed to the end of finding those which are free of poison and will not fade, to make them serviceable to the historic art of painting.
For the aniline color there is therefore a wide field open to experiment.
Whether our interests and demands in regard to colors will be fulfilled is a question of time.
Even the newer productions of the animal and vegetable kingdom already differ in quality from those indispensable to the art of marbling.
I recommend to my honored colleagues to read my book with attention, so that the intended gain shall not be missed and the beautiful art of marbling may attain a larger circle of friends.