A Report upon the Mollusk Fisheries of Massachusetts

by Massachusetts. Commissioners on Fisheries and Game; David Lawrence Belding

It is not difficult to determine the reasons for the failure of the culture experiment at Essex. The areas upon which clams were planted were those which were at the time unproductive. The beds still containing clams—the "town flats"—were free to any native of Essex. The one thing which was absolutely necessary to the success of any planter was that the clams on his leased ground should not be disturbed by other diggers. This protection was apparently not given in any case by the town authorities, and, as no person lived within sight of the majority of the beds, it was quite impossible for any man to guard his property much of the time.

As to what followed it is not easy to obtain definite testimony from the clammers themselves. Other citizens of the town, however, and some few clammers, intimate that most of the men began to take clams from any property but their own, and that in this way the full result of no man's labor in planting was ever realized. Others who did not make clam digging a regular business, but only dug occasionally, are said to have had no respect for the rights of those who had leased property. It was said that at times when vessel builders and the shoe factory released employees, many of them, for lack of other occupation, turned their attention to clam digging, with the result that too many clams were at the time taken from the flats.

Another reason for the failure of the Essex experiment is that a number of short-sighted clammers began to fear, after the clams had been planted, that the production might suddenly become so great as to glut their market, and, as a consequence, force prices down. Some few individuals, inspired by this fear, are reported to have said and to have done everything in their power to prevent the success of the experiment. In all cases, it is said, the selectmen of the town, who issued the leases, refused their aid in the prosecution of trespassers.

In spite of the fact, which had been demonstrated in the experiment, that when properly planted the clams grew much more rapidly and became much larger than on the natural beds, no applications for a renewal of the leases were made when the first ones expired. No change in the condition at Essex may be hoped for until there is some evidence that a law protecting the planter will be strictly enforced. With proper protection, a great industry might, and probably would, be quickly established, not only in Essex, but in any region where clam flats are now unproductive because of excessive digging.

Protection Necessary.—The same lack of protection which ruined the Essex clam experiments has been the cause of similar failures in other shore towns. As long as no protection is given, clam farming can never become possible, as the whole success of the enterprise depends wholly upon the planter's having complete control of his land. The present law gives absolutely no protection, as according to the old free beach law a person has a right to dig a mess of clams anywhere between the tide lines, no matter whether natural or planted. This practically discourages clam farming, however profitable, as no clammer is going to the labor and expense of planting clams, if the next person who comes along has a legal right to dig as many as he pleases. Until a law is passed which gives to the clam planter absolute protection from this sort of trespassing, and does away with the antiquated free fishing law, clam culture can never become a successful industry.

Present Clam Culture.—In 1906 grants of barren flats were again issued for the purpose of clam culture in Essex, and this time the attempt seemed successful. Two things encouraged this: the excellent results of the experiments in Essex River by the Commission on Fisheries and Game, and the possible results indicated by the experiments of 1888. The only protection for these clam grants is by public sentiment, and the mutual agreement of all the clammers to respect the rights of the individual. So far there has been no trouble from trespassing and the lack of protection, which caused the failure of first attempts. It is hoped that these clam farms will become permanently successful, despite the lack of protection, as they will greatly increase the production of the Essex clam flats.

Clam Farming and Agriculture.—The comparison between clam farming and agriculture is very close, and both possess many common features, though there are several points of difference. The clam obtains its sustenance entirely from the water, while agricultural products obtain their nourishment chiefly from the soil. The nitrogenous waste products of the land washed into the streams furnish the nourishment to the little marine plants (diatoms) on which the clams feed.

Rate of Growth of the Clam.—The report of the Commission on Fisheries and Game for the year 1906 contains the following statements:—

What is the natural growth of the clam per year?

There is great diversity in the growth of the clam, owing to the location in respect to three essential conditions,—current, length of time submerged, and soil. The following figures give briefly the general trend of results from numerous experimental beds under great variety of conditions. For simplicity, a 1-inch clam is taken as the standard.