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The Protection of Fresh-Water Mussels
R. E. Coker
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[3]THE PROTECTION OF FRESH-WATER MUSSELS.
By R. E. Coker, Ph. D.,
Director United States Biological Station, Fairport, Iowa.
PRESENT CONDITIONS. THE MUSSEL INDUSTRY.The history of the fresh-water mussel industry gives illustration of the promptness with which an American industry may be developed once the pathway is found. Undertaken in a small way scarcely more than a score of years ago, the manufacture of pearl buttons began almost immediately to assume the proportions of an important national industry. As early as 1898, when the enterprise was only 6 years old, there were about 50 factories in more than a dozen towns along the Mississippi. With improved machinery and methods further expansion occurred, until within a few years the output approximated 30 million gross of buttons, with a value of many millions of dollars. The growth of the industry ha. . . Read More
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