CLXI

When you are drawing from nature the light should be from the north, so that it may not vary; and if it is from the south keep the window covered with a curtain so that though the sun shine upon it all day long the light will undergo no change. The elevation of the

light should be such that each body casts a shadow on the ground which is of the same length as its height.

Leonardo.

CLXII

Above all let the figures that you paint have sufficient light and from above, that is, all living persons whom you paint, for the people whom you see in the streets are all lighted from above; and I would have you know that you have no acquaintance so intimate but that if the light fell on him from below you would find it difficult to recognise him.

Leonardo.