Baked Terrapins, Maryland Style

Half fill a baking pan with dry gravel or sand, put it into an oven and make it
quite hot; wash well three terrapins that have been killed, remove their heads, put
them with the top shell downward in the sand and bake in the oven for an hour.
Take them out, remove the under shell, gall bag and entrails and loosen the meat
without taking it out of the back shell. Pull off the legs, skin them and lay them on
the top. Put one breakfast cupful of butter in a basin to soften, mix in one teacupful
of flour, one teaspoonful each of salt and black pepper and the juice of a lemon.
Put a little more than one tablespoonful of this into each terrapin, place them back
in the oven for a few minutes, take them out and serve on a napkin spread on a dish.