16
MOO COW TALES.
to shrivel, and as he was trying to shield her from the sun, the Green Witch of the Fields came along. She stopped when she saw the two friends and the tears came into her eyes, because she was sorry for them. But she quickly dashed her tears away, because if a green witch ever drops her tears she loses all her power and becomes a sort of green stuff, which the wind carries away and drops on to the ponds. You must often, have seen it there. Perhaps your nurse told you it was duckweed, but now you will know better, won't you? And you must never try to walk on it because, you