For the past thirty years there has been an extensive oyster industry at Wellfleet, and many grants have been taken out in the waters of Wellfleet Bay, which possesses some of the best oyster ground in the State. In spite of the success of the past years, the industry is declining, indicating, possibly, that after 1910 no more grants will be leased. Four parts of the bay are taken up by oyster grants in the vicinity of: (1) Mayo's Beach; (2) Great Island; (3) Indian Neck; (4) Lieutenant's Island. (1) Nine grants, covering an area of 176 acres of both flats and deeper water, extend out from Mayo's Beach a distance of 1,500 feet. These grants extend along shore from Commercial Wharf to Egg Island, a distance of 3,500 feet. Seven of these grants have each a shore extension of 200 feet, the other 2 having 600 and 1,500 feet respectively. The principal planting on these grants is done by D. Atwood & Co. (2) On the west side of the bay, along the shores of Great Island and Beach Hill, there are 7 grants which are now worked. Originally there were 12 grants in this locality, but 5 of them expired some time ago. The area included in these 5 grants is 500 acres, while the entire granted area covers 708 acres. Wright & Willis, R. R. Higgins and L. D. Baker have done most of the planting on these grants in the past few years. (3) On the east side of the bay, near Indian Neck, are 5 grants, comprising 224 acres. J. A. Stubbs does all the planting here. A single grant of 11 acres of flats is held in Duck Creek Cove by J. C. Wiles. These grants extend along the shore for 2,000 yards and run out into the bay for 1,000 yards. (4) Off Lieutenant's Island are 8 grants, comprising a total area of 1,062 acres. Only 3 of these, comprising 559 acres, are now worked. Joseph Crosby of Osterville is the principal planter on these grants. From the statistical returns of the oyster planters it is found that 23 grants are now held for oyster planting, comprising an area of 967 acres; 810 acres, or 83 per cent. of this area, is suitable for oyster culture. There is very little soft mud bottom, only 82 acres, while the shifting sand area is 75 acres. The total area of grants ever leased at Wellfleet comprises 2,182 acres, of which 1,473 are now held. The average depth of water over these grants at mean low tide is 4 feet, the extremes running from 1 to 12 feet.