In making the survey of the clam areas, records were made of: (1) soil; (2) food (_a_) in water, (_b_) on surface of soil; (3) rate of currents; (4) abundance of clams and localities of set; (5) barren flats that can be made productive. In the present report only the kind of soil, abundance of clams and area of barren flats will be given, the food problem being reserved for later publication. _Summary._--In the following summary the seacoast towns are arranged in geographical order from north to south. The number of men includes both regular and intermittent clammers who dig for the market; all others are excluded. In determining the production of any town it is impossible to obtain exactly correct figures, as the amount dug for home consumption is an unestimable quantity, and the clams are marketed in a number of ways, rendering it almost impossible to get complete statistics. The production statistics have been obtained in a variety of ways, and the final estimates have resulted from careful consideration of all facts. The invested capital includes the clammer's outfit and boat, but does not include personal apparel, such as boots and oil skins. The clam flats are divided into two main divisions: (1) productive; and (2) barren. The barren areas are those where at present no clams grow at all, not even scattering; and areas yielding even a few clams are still considered productive flats, though to all practical purposes barren. It was necessary to make the division thus, as otherwise no decisive line could be drawn. The barren flats are divided into those sections that can be made productive and those that can never be made to grow clams. The productive flats, on the other hand, are divided into areas of good clamming and areas of scattering clams which do not support a commercial fishery. The normal production of the clam flats has been carefully estimated, in view of the previous experiments of the Fish and Game Commission, and the different classes of flats have each been given a certain valuation in computing the total for each town. The areas given of the clam flats are based upon calculations, as no engineering survey was made. The price of clams varies in different localities, and chiefly depends upon the quality of clams and the method of marketing. In certain towns clams are "shucked" (removed from the shell),--a process which greatly increases their market value; while in other places they are sold only in the shell. These two facts account for the apparent variation in the value of the production in different localities, as each town is given its own market price.