Place in a mixing bowl Two cups of flour, One teaspoon of salt, One teaspoon baking powder, One tablespoon sugar. Sift to mix and then rub in one-half cup of shortening; then mix to a dough with one-fourth cup of ice-cold water. Set on ice for one hour, then roll out one-eighth inch thick and cut into four-inch squares. Fill with pared and stoned peaches, placing two tablespoons of brown sugar and one-half teaspoon of nutmeg in each dumpling. Brush the edges with water and then fold the pastry together. Place on a well-greased baking sheet and add one-half cup of water to the pan and bake in a moderate oven for thirty minutes.