Contents 



BIOLOGY Page 



THE INSECTS 7 



Order Aptera 7 



Order Ephemerida 8 



Order Odonata 10 



Order Orthoptera 27 



Order Hemiptera 29 ' 



Order Trichoptera 31 



Order Coleoptera 33 



Order Diptera ." 35 



Order Lepidoptera 37 



Order Hymenoptera 39 



THE MOLLUSKS 41 



The Unionidae 41 



Lakes and ponds as the home of mussels 41 



Origin and character of the Maxinkuckee mussels 42 



Distribution of mussels in the lake 44 



List of Species 51 



Mollusks other than Unionidse 72 



THE CRUSTACEANS 75 



The copepod parasites 79 



The crawfishes 83 



THE LEECHES 87 



THE PROTOZOANS AND CCELENTERATES 95 



THE WORMS 100 



THE SPONGES 100 



THE PLANKTON 105 



The plankton scum or wasserbluethe 110 



THE FLORA 117 



Introduction 117 



THE AQUATIC FLORA 119 



Introduction 119 



Uses of the aquatic flora 119 



THE LAND FLORA 124 



Introduction 124 



General Floral Regions 128 



COMPARISONS OF AQUATIC AND LAND FLORAS 133 



THE ALG,E 138 



Introduction 138 



ANNOTATED LIST OF SPECIES 141 



The Green Algae, etc 141 



The Characese 157 



The Diatoms, etc 161 



The Aquatic Plants of Lake Maxinkuckee 165 



The Aquatic Plants of Lost Lake 192 



The Ferns, Fern-Allies, and Seed-bearing Plants 197 



