About 100 acres in the central section of this flat are covered with a thick set of clams, especially from 1 to 2 inches. This territory furnishes the bulk of the good digging, and is being constantly turned over and the larger clams sorted out. Roughly speaking, the main east half of the flat is sandy, or hard mud, with very good clamming, the western half softer mud, with fair or scattering clams. This is an exceptionally fine natural clam flat, and if properly cultivated its production would be immensely increased. At the eastern extremity of the flat a long, narrow cove extends in a general northerly direction into the main land. This cove, including the outer fringing bars, contains some 34 acres of flats, for the most part sandy and rather poorly productive, though no considerable area is anywhere strictly barren. The combined clam flat territory of the town aggregates 250 acres, comprising 150 acres of good clamming and 100 acres of scattering clams; of these, 216 acres are of mud and 34 acres of sand. While the town records show 66 licensed clammers, only about 50 make clamming their chief occupation. The industry is carried on in much the same manner as at Newburyport; $625 is invested in boats and implements, and some 15,000 bushels of clams, aggregating $16,500, are annually produced. The clam industry at Salisbury is largely stationary as regards available territory, while the production varies considerably from year to year. There is little or no town legislation affecting the industry, except the issuing of permits by the selectmen. These permits cost 25 cents, and are required from every clammer. SUMMARY OF INDUSTRY. Number of men, 66 Capital invested, $625 Production, 1907:-- Bushels, 15,000 Value, $16,500 Total area (acres):-- Sand 34 Mud, 216 Gravel, - Mussels and eel grass, - Total, 250 Productive area (acres):-- Good clamming, 150 Scattering clams, 100 Barren area possibly productive (acres), - Waste barren area (acres), - Possible normal production, $70,000 _Newburyport._ Newburyport is pre-eminently the clam town of Massachusetts. It produces the most clams, gives employment to the most men, and has on the whole the finest flats. The total clam-growing area of this town comprises about 1,080 acres; of this, some 800 acres are more or less productive, while the balance, 280 acres, is practically nonproductive. Scattering clams exist everywhere, so there are, properly speaking, no truly barren flats.