Pound Cake

1 cup butter
1 cup sugar
1 tsp. vanilla extract
1 tsp. lemon extract
5 eggs
2 cups flour
1 tsp. baking powder

Cream butter thoroughly, add sugar very slowly, beating well. Add flavoring and yolks of eggs which have been beaten until pale yellow. Beat egg whites until light and add alternately a little at a time with the flour which has been sifted with baking powder four times. Beat well for several minutes until light and fluffy. Bake in greased loaf pan in moderate oven about one hour.