The statistical returns were compiled by sending to each oysterman in the State a blank form, containing a series of questions, with the request that he would co-operate with the commission by answering. Many oystermen responded with complete answers, thus permitting the commission, through their aid, to publish an extended report on the oyster fishery. However, it was found impossible to obtain complete information from several towns, as a number of oystermen neglected to return these blanks. The return of each oysterman is filed at the office of the Commission on Fisheries and Game, and only the total for each town is published, thus treating as confidential the private business of individuals. The commission expresses a most cordial acknowledgment to the oystermen for their co-operation in this matter. The other parts of the report were obtained by personal inspection of the oyster beds as to their biological conditions, by means of town records, and interviews with the oystermen. Town records, which should have given the location, number and areas of the grants, proved nearly worthless in most cases, owing to incompleteness, loss and confusion. Owing to the frequent change in selectmen, little if any information could be obtained from this source, as the new selectmen were generally unacquainted with the work of their predecessors concerning the leasing of oyster grants. The grants were often incompletely described, bounds uncertain and the acreage unknown. The interviews with the individual oystermen furnished more and better information both in regard to the present condition of the industry and the general history for each town. Personal inspection of the oyster grounds was made, the biological conditions noted and the area of the grants plotted on the accompanying maps. Not all these grants are worked, and parts of the cultivated grants are unfit for oyster raising. The charted area includes all grants, cultivated or uncultivated. In reviewing the history of the industry, information was obtained from town records, oystermen who had been in the business for years, and various newspapers and periodicals. For a comparison of the oyster industry of 1879 and 1907 the excellent report of Mr. Ernest Ingersoll upon the "Oyster Industry," published in the tenth census of the United States, was used for comparison, and in many places directly quoted. Were it not for this work and the report of A. Howard Clark on the "Fisheries of Massachusetts," it would have been impossible to draw any reliable comparison with the oyster industry of twenty-eight years ago.