4 eggs. 2 cups granulated sugar. 3 cups flour. 1 teaspoonful baking soda. 1 cup cold water. Juice of 1 lemon. 2 teaspoonfuls of cream of tartar and pinch of salt. Beat eggs well, then sift in sugar and half of flour in which cream of tartar has been mixed. Dissolve the soda in a little water and add also the lemon juice and lastly add the balance of flour. Bake in layer cake pans two inches deep.