But she did not wish to vex their kind uncle, who was a very learned man, and was always thinking of collections and museums, and science and experiments; and she did not like to tell him that she would rather her little ones should learn about butterflies from the book with its beautiful pictures, and from watching them flying about, and settling on the flowers in the fields; and that she did not think it could be a nice play for children to catch and kill the pretty harmless creatures.