Marble Cake (American).—Beat 4oz. of butter to a cream with 12oz. of sugar, then mix in a gill of water and 4oz. of flour; when this is all well mixed, add the whites of four eggs beaten to a stiff froth, then 4oz. more of flour, and, lastly, the strained juice and the grated rind of a lemon, and set it aside while you make the dark mixture. For this, cream 2oz. of butter with ½lb. brown sugar, add, one by one, the yolks of four eggs, until this is all very light; then add a gill of water and 6oz. of flour, and beat it all together till quite smooth, when you add 2oz. of melted chocolate, and a teaspoonful of essence of vanilla. Now add a teaspoonful of baking powder to each part, and put into a well-buttered cake tin a layer first of the white and