Theory of Colours, Volume II

...have been used sufficiently. Would that more people—even those who, for the sake of other purposes, go through old and new works—might occasionally take note of what seems significant for our fieldoriginal: "Fach"; referring here to the specific branch of academic study or professional discipline this book addresses. and kindly communicate it; just as we have already become indebted to many friends with our best thanks for such communications.