In view of restocking the barren areas through cultural methods, the north shore possesses two advantages over the south shore: it has a larger natural supply at present, which will make restocking easier; it has larger areas of flats, which can be made to produce twenty times the normal yield of the south shore flats. Although, compared with the north shore, the clam area of the south shore seems poor, it is above the average when compared with the clam areas of the other States south of Massachusetts, and when properly restocked the clam flats of southern Massachusetts should furnish a large annual production. If the clam industry is not properly cared for, it will be totally ruined before many years. The clammers do not realize this, because of a mistaken impression that nature will forever furnish them with good clamming, and they have little thought for the future; while, on the other hand, the consumer is indifferent from lack of knowledge. _Scope of the Report._--The object of this report is to present in brief form the condition of the clam fishery in Massachusetts. For this purpose facts showing the present extent of the industry have been compiled, with the view of furnishing both the clammer and consumer with certain desirable information. The report will consider: (1) general conditions of the industry of 1907; (2) a survey of the clam-producing area, illustrated by maps; (3) a plan of clam culture which will make productive many acres of barren flats; (4) the history of the clam industry, a comparison being made between the industries of 1879 and 1907; (5) a description of the industry. _Methods of Work._--The same methods as used with the other shellfish were pursued in obtaining the statistical data for the clam industry. The clam-producing areas were examined and the observations recorded. Town records, which were of some assistance with the other shellfish, furnished practically no clam data, compelling the Commission to rely upon the estimates of the clammers and clam dealers. While this method made it difficult to secure accurate detailed information, the statistics for each town were checked up in a variety of ways, thus furnishing as nearly correct figures as can be obtained. In making an historical comparison of 1879 and 1907, the report of Ernest Ingersoll on the clam fishery of the United States, and the report of A. Howard Clark on the fisheries of Massachusetts, as published in the United States Fish Commission Report, Section V, volume 2, and Section II., respectively, were of great use, as practically all of the statistics for 1879 were obtained from these two reports.