Raised Graham Griddle Cakes

2 cupfuls Graham flour. 1 cupful wheat flour. 3 tablespoonfuls yeast. Warm water or milk to make a thin batter. Set in a warm place over night. Reserve 1 cup of this mixture for yeast for next time. Into the remainder stir 1/2 teaspoonful of soda dissolved in warm water. One or two thoroughly beaten eggs may also be added to great advantage. Bake on a griddle for breakfast.