Natural history and propagation of fresh-water mussels . OuIerUft labial palpInner Uj 1 palp Visceral mass Lunula Uefl manlle- fg^I*&rior rc\<^Xt^riotr adductor muaclc ^wura-brantniaichamber RigUt mantle,Owtsr ri^nt ^tllinn<ir right ^illinner le-j t ^til Fig. I.—The structure of a fresh-water mussel. (Based upon drawing of white heel-splitter. Sytnphynota tomManata. from Lefevre and Curtis, 1912.). Fig. -A tool which, if employed with care, may be used for partially opening livinjj mussels for examination cf conditions within the shell. PART 3. STRUCTURE OF FRESH-WATER MU
Natural history and propagation of fresh-water mussels . OuIerUft labial palpInner Uj 1 palp Visceral mass Lunula Uefl manlle- fg^I*&rior rc\<^Xt^riotr adductor muaclc ^wura-brantniaichamber RigUt mantle,Owtsr ri^nt ^tllinn<ir right ^illinner le-j t ^til Fig. I.—The structure of a fresh-water mussel. (Based upon drawing of white heel-splitter. Sytnphynota tomManata. from Lefevre and Curtis, 1912.). Fig. -A tool which, if employed with care, may be used for partially opening livinjj mussels for examination cf conditions within the shell. PART 3. STRUCTURE OF FRESH-WATER A general description of the structure of fresh-water mussels may assist thosewithout special knowledge of the anatomy of mussels to follow intelligently the accountof the natural history, propagation, and development which it has been the primarypurpose of this report to give. It may also serve as a helpful introduction to personswith limited technical knowledge who wish to make original observations or experi-ments concerning the habits and growth of mussels. It has been the special purposeof the authors to point out the more conspicuous gaps in our knowledge of the behaviorof mussels and their relations to the environment. Many of these gaps can readily bebridged by any who will take the trouble to observe painstakingly and repeatedly theconditions under which fresh-water mussels live
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Keywords: ., bookcentury1900, bookdecade1920, bookpublisherwashi, bookyear1921
