Sunshine Cake

10 eggs, separated
1 ½ cups sugar
¼ tsp salt
1 tsp vanilla
1 sp cream of tartar
1 ¼ cups sifted flour
Beat egg yolks until thick and lemon colored; add vanilla. Gradually add sugar, a few tablespoons at a time, and continue to beat until mixture is very light. Add salt and cream of tartar to egg whites and beat unil soft peake form. Gently fold beaten whites into yolk mixture. Add sifted flour, sifting a small portion at a time on top of the egg mixture and folding until well blended. Turn into an ungreased 10 inch tube pan. Bake 30 minutes at 350 degrees. Reduce to 300 degrees, continue baking for 30-40 more minutes, or until done. Invert pan. Cool for 1 hour. Cover with Eight Minute Frosting.