Frozen apple float

From 1917: Pare, core and quarter five juicy cooking apples. Cook one quarter of a cupful of water, two cloves, the grated rind of half a lemon, half a teaspoonful of ground cinnamon and half a cupful grated maple sugar. When soft, press through a sieve. When the apple puree is cold, beat the chilled whites of two eggs as swiftly as possible; add three tablespoonfuls of powdered sugar and fold in the meringue. Freeze slowly as for sherbet and serve in crystal ice cups