Gold Cake

Two cups of sugar, half a cup of butter, the yolks of six eggs and one whole one, the grated rind and juice of an orange, half a teaspoonful of soda dissolved in half a cup of sweet milk, four cups of sifted flour, sifted twice; cream the butter and sugar, then add the beaten yolks and the flour, beating hard for several minutes.  Lastly, add orange and bake, frosting if liked.