CONTENTS. 



Page. 



Introduction 3 



Geology and geography of Maumee and upper Wabash Basins 4 



Biology of Maumee River 8 



Mussel survey 10 



Headwaters of Maumee and Little Wabash Rivers 10 



St. Marys River and Spy Run 11 



St. Joseph River and feeder canal 18 



Maumee River 25 



Discussion of mussel species 39 



General distribution of shells in Maumee River 55 



Food of Maumee mussels 57 



Parasites of Maumee mussels 61 • 



General co nclusions 71 



2 



