Man's health rests in that of his stomach. The food question is a concern of the physician as well as of the publicist. The race began life on a vegetable diet, and to that it reverts when compelled by enfeebled digestion or by the increasing difficulty of providing animal food for a dense population. But it likes flesh when able to assimilate it or to procure it, and demands at least the compromise of fish. Hence, the revived attention to fish-breeding, an art wellnigh forgotten since the Reformation emptied the carp-ponds of the monks. Maryland, New York and other States illustrate this device for enhancing the food-supply, and the aquaria at Agricultural Hall, containing twelve or fifteen thousand gallons of salt and fresh water, present a congress of the leaders, gastronomically speaking, of the finny people. The shad remains not only to be naturalized in Europe, but to be reintroduced to the water-side dwellers above tide, who once met him regularly at table. He is joined by delegates from the mountain, the great lakes and the Pacific coast in the trout, the salmon and the whitefish, and by that quiet, silent and slow-going cousin of the fraternity, the oyster, most valuable of all, as possessors of those qualities not unfrequently are. Europe does not dream, and we ourselves do not realize until we come carefully to think of it, what the oyster does for us. He sustains the hardiest part of our coasting marine, paves our best roads, fertilizes our sands, enlivens all our festivities, and supports an army of packers, can-makers, etc., cased in whose panoply of tin he traverses the globe like a mail-clad knight-errant in the cause of commerce and good eating. Yet he needs protection. All this burden is greater than he can bear, and it is growing. System and science are invoked to his rescue ere he go the way of the inland shad and the salmon that became a drug to the Pilgrim Fathers. It is not easy to frame a medal or diploma for the fostering of the oyster. More effective is a consideration of the impending penalty for neglecting to do so. _Ostrea edulis_ is one of the grand things before which prizes sink into nothingness.