INDEX 



Acineta, 26 

 Aeolosoma, 73 

 Alcyonella, 82 

 Amoeba, 19 

 Ancylus, 86 

 Anodonta, 87 

 Antherozoids, 15 

 Aptera, 34 

 Apus, 29 



Argroneta aquaticus, 62 

 Ascaris lumbricoides, 72 

 Aacilius sulcatus, 36 

 Asellus aquaticus, 32, 33 

 Asplanchnaceae, 76 

 Asterionella formosa, 12 

 Bdelloida, 76 

 Beatis flurainum, 45 

 Bell animalcules, 24 (31) 

 Black Stentors, 27 

 Branchiopoda, 28 

 Branshionus, 77 

 Brick builders, 78 

 Bristle worms, 73 

 Caddis cases, 48 

 Caddis " worms," 39 

 Carapace, 28 

 Caudal setae, 45 

 Cells, daughter, vi 

 Chaetonotus larua, 23 

 Chironomous, 56 

 Cilia, 15, 20, 76 

 Cladocera, 28 

 Clepsine, 75 

 Closterium lunula, 13 

 Coelenterates, 84 

 Coleps hirtus, 23 

 Condona reptans, 32 

 Corethra, 55 

 Corixa, 39 



Cosmarium botritis, 13 

 Cothurnia, 26 

 Cristatella, 81 

 Crown animalcule, 78 

 Cyclops, (78, 84) 30 

 Cyclosis, 13 

 Cypris, 32 

 Dancing flies, 21 

 Daphnia, 28 

 Dero, 73 

 Desmids, 10, U 

 Diatoms, 11 



Diptera, 34 



Distoma hepaticum, 86 



Dolomedea flmbriatus, 60 



Dragon flies, 50 



Dreissehidse, 86 



Dytiscus, (34) 37, (89) 



Egg cocoon, 37 



Eleutheroblastes, 84 



Elfts, 90 



E. danica, 42 



E. vulgaris, 42 

 Ephemerella, 45 

 Epistylis, 25 



F. Cornuta, 78 

 Fission, 13 

 Flea, 28 



Flosculariaceae, 78 

 Fossil May flies, 47 

 Fredericella, 82 

 Frogs, 87 

 Frustules, 13 

 Funiculus, 82 

 Gastroricha, 23 

 Geneva, lake of, 33 

 Gerridae, 65 

 Gerria, 67 



Gomphonema geminatum, 12 

 Gordius, 72 

 Gymnomera, 28 

 Gyrinidae, 34 

 Haemoglobin, 58 

 Heliopelta, 11 

 Helochares, 37 

 Hemiptera, 34 

 Hermaphrodites, 82 

 Hibernacula, 82 



Hirudo medicinalis, 74 

 Horse leech, 74 

 Hyalotheca dissiliens, 14 

 Hydatina senta, 76 

 Hydra, 84 

 Hydrachnidae, 64 

 Hydradephaga. 34 

 Hydrocerisa, 38 

 Hydrometa stagnorum, 67 

 Hydrophilidae, 34 

 Hydrophilus, 37 

 Igneus, 28 

 Infusoria, 20 

 King crab, 64 

 Lacinularia, 79 



