Nut Caramel Icing

NUT CARAMEL ICING

1 1/4 cups brown sugar
3/4 cup white sugar
1 cup water
Whites of 2 eggs
1 teaspoon vanilla
1/4 cup broken walnut meat

Boil sugar and water without stirring, until it threads.
Pour gradually while beating constantly, on beaten whites of
eggs, and continue beating until thick. Set pan over hot water
and cook until mixture becomes ground on edge of pan.
Remove from fire and beat in chopped nuts. Spread on layers
and top of cake.