In the food processor or in a large bowl, stir together the flour, corn meal, salt, and sugar. Add the egg and mix well. Blend in enough of the milk to form a dough that will hold together in a cohesive ball. On a floured surface or pastry cloth, roll into a rectangle about 3/8 inch thick. With a sharp knife, cut the dough into 1-1/2by 3-inch rectangles. Place them on a lightly greased or parchment-lined baking sheet. Prick each cracker 2 or 3 times with the tines of a fork. Bake for 60 to 70 minutes, or until the crackers are thoroughly dry. Cool on a rack. These crackers should be hard. If necessary, put them back in the oven for a few extra minutes. Yield: 10-15. Converted by MMCONV vers. 1.40