The artist Millet loved to draw as well as to paint. Black and white pictures had their charm for him as truly as those in color. Indeed, he once said that "tone," which is the most important part of color, can be perfectly expressed in black and white. It is therefore not strange that he made many drawings. Some of these, like the Knitting Lesson and the Woman Feeding Hens, were, as we have seen, studies for paintings. The picture called Filling the Water-Bottles was, on the other hand, a charcoal drawing, corresponding to no similar painting. It is in itself a finished work of art.