Chop an onion very fine; place it in a stew-pan with one ounce of butter, and let it get a good golden color, then add a tablespoonful of cooked, finely minced spinach, also a small glassful of white wine. Have eighteen medium-sized oysters chopped exceedingly small, and seasoned with a pinch of salt, and the same of pepper; place these in the stewpan, and let cook for fifteen minutes. Put in one whole egg, also a bruised clove of garlic; stir; then take six large, clean oyster-shells; fill the bottoms with a bed of three parboiled oysters, cover them with the spinach mixture, and besprinkle with fresh bread-crumbs. Flatten the tops with the blade of a knife, pour a very little clarified butter over, and put them for three minutes in the oven. Serve on a folded napkin, garnishing with parsley-leaves.