alternately with milk. Add vanilla a nd orange flavoring. Finally fold in the stiffly beaten egg whites. Divid e equally between three 9 inch layer cake pans greased and floured. Bak e at 375 about 20-25 minutes or until it tests done. Turn out to cool fo r at least 20 minutes before turning upright. When layers are cool assemb le cake as follows:

Put bottom layer on a plate and spread lightly with orange marmalade. Put second layer upside down on bottom layer and spread it with marmalade, t hen put the third layer on the cake top side up. Spread generously with f luffy orange frosting.

Orange frosting: Fill a large saucepan with about 3 inches of water. Hea t until water begins to simmer. Turn heat off. Then in a 2 quart straight sided heat proof bowl combine the sugar, cream of tartar, salt, egg whites and cold water. Reheat water in pan until it is again simmering , but not boiling. Set bowl in hot water and beat with rotary beater unti l frosting stands in peaks about 5-7 minutes. Remove from water add orang e flavoring and vanilla and beat a few minutes longer to blend and to firm up the frosting.