Commercy Madeleines

Have in a bowl one pound of sugar, one pound of flour, ten egg-yolks and the peel of one lemon; mix well without beating and add a pound of melted butter and finally eight beaten egg-whites. Butter some long shell-shaped molds, flour over and fill three-quarters full with this preparation; strew sugar on top and bake in a medium oven. As soon as baked unmold on a wire grate and serve when cold.