Massachusetts fishermen to-day receive an annual income of $685,705 from the shellfisheries, which approximately cover a productive area of 40,000 acres. Under the present methods of production, the average value per acre is only $17; each acre, if properly farmed, should furnish an annual production of at least $100, or six times the present yield. The shellfish areas of Massachusetts which are at present utilized are giving almost a minimum production, instead of the enormous yield which they are capable of furnishing. All that is necessary to procure the maximum yield is the application of systematic cultural methods, instead of relying on an impoverished natural supply. Not only are the productive areas furnishing far less than they are capable of producing, but also Massachusetts possesses 6,000 acres of barren flats, which should become, under the proper cultural methods, as valuable as the productive areas. (This has been experimentally demonstrated by the commission.) While it is possible to develop, through cultural methods, these latent natural resources, it will take years to bring them to a high degree of development. It can be partially accomplished, at least, in the next few years, and the present production increased several times, _as nature responds to the slightest intelligent effort of man, and gives large returns_. DECLINE OF THE SHELLFISHERIES. _A. Is there a Decline?_ (1) So obvious is the general decline of the shellfisheries that almost every one is aware, through the increasing prices and difficulty of supplying the demand, that the natural supply is becoming exhausted. (2) Statistical figures of the shellfish production not only show a decline, but conceal a rapid diminution of the supply. (3) Production statistics alone should never be taken as typifying the real conditions of an industry, as such figures are often extremely deceiving. For instance:-- (4) The increased prices, stimulated by an increasing demand, have caused a greater number of men, equipped with the best modern implements, to swell the production by overworking shellfish areas which in reality are not one-fourth so productive as they were ten years ago. While the general decline of the shellfisheries is a matter of public knowledge, specific illustrations of this decline have been lacking. The present report calls attention to actual facts as proofs of the decline of each shellfishery, by a comparison of the present conditions in various localities with the conditions of 1879. The only past record of Massachusetts shellfisheries of any importance is found in the report of the United States Fish Commission for 1883, and, although this is very limited, it is sufficient to furnish many examples of the extinction or decline of the shellfisheries in certain localities.