Preheat oven to 450 degrees F. Mix or sift together dry ingredients. Work in butter with pastry blender, fork or fingertips. Reserving a small amount of the unbeaten egg white, beat eggs and add to mixture. Add milk and mix gently. Place on floured board and pat to ¾ inch thickness. Cut in squares, diamonds or triangles. Put 4 or 5 berries into each piece of dough. Brush with reserved egg white diluted with 1 teaspoon of water. Sprinkle lightly with granulated sugar. Place pieces of dough, well spaced, on baking sheet. Bake till brown, about 15 to 20 minutes