Preheat the oven to 450ºF.   Butter a shallow baking dish. Combine the bread crumbs and cracker crumbs, stir in the melted butter. Place a thin layer of the crumb mixture in the bottom of the prepared baking dish. Layer the oysters over the crumbs and sprinkle with salt and pepper to taste. Pour 2 tablespoons oyster liquid and 1 tablespoon milk over he top. Repeat then cover the top layer with the remaining crumb mixture. Bake at 450ºF.  for 30 minutes.