222 



INDEX 



McHargue, 176 



Magnesium, 54, 128 



Manganese, 53 



Melanoplus, analysis of, 176 



Melosira, number of, 56, 111, 129 



Mesolimnion, 1, 22, 156 



Methods, 8, 16 



Microcystis, analysis of, 159, 215 



number, 111, 129, 136 

 Mollusks, 154 

 Monads, number of, 118 

 Moore et al., 96 

 Myriophyllum, analysis of, 165, 215 



Nannoplankton, defined, 63 



in Mendota, 63 



in Monona, 112 



in Waubesa, 130 



organisms in, 83, 118, 135 



ratio to net plankton, 96 



summary of, 146 

 Net, description of, 10 

 Net plankton, 20 



in Kegonsa, 139 



in Mendota, 25 



in Monona, 104 



in Waubesa, 124 



organisms in, 55, 110, 128 



ratio to nannoplankton, 96 



summary of, 142 

 Nitrogen, forms of, 40 



in nannoplankton, 70, 114, 131 



in net plankton, 31, 105, 126, 139 



in water, 73 



ratio to organic matter, 39, 71, 106, 

 114, 126, 132 

 Nitrogen free extract, defined, 80 



in nannoplankton, 80, 117, 134 



in net plankton, 44, 109, 127 



Oligochaeta, analysis of, 173, 215 



Organic matter, defined, 16 

 in nannoplankton, 67, 112, 130 

 in net plankton, 25, 104, 124, 139 



ratio to nannoplankton, 96, 120, 138 

 in sea water, 96 

 in total plankton, 97, 121 

 live weight of, 121, 123 

 per unit of area, 98, 122, 139 

 ratio to nitrogen, 39, 71, 106, 114, 126, 

 132 



Organisms, analyses of, 158, 215 

 in nannoplankton, 83, 118, 135 

 in net plankton, 25, 55, 110, 128 

 overlapping of, 100 

 weight of, 57, 155 



Oscillatoria, analysis of, 161 

 number of, 119 



Oxygen. See dissolved oxygen 



Pentosans, 16 



in nannoplankton, 79, 117, 134 



in net plankton, 43, 108, 127 

 Peridinians, analysis of, 162 

 Phosphorus, 53, 128 

 Photosynthesis, 3 

 Plankton, defined, 7 



losses of, 153 



production of, 4, 17, 151, 156, 157 



quantity of, 3, 23 



standing crop of, 4, 151 



turnover of, 5, 151, 154, 156 



variations in, 27 



see nannoplankton, net plankton, and 

 total plankton 

 Potamogeton, analysis of, 164, 215 

 Protein, see crude protein 

 Putter, 73 

 Pumps, 9 

 Purpose of investigation, 17 



Eeproduction, rate of, 152, 156 

 Eotifers, food for, 155 



Schroederia, number of, 119 



Schuette, viii, 16, 31, 40, 42, 54, 168 



Sialis, analysis of, 174, 215 



Silica, 52, 109, 128 



Silt, 82, 118 



Size of organisms, 89, 153 



Spirogyra, analysis of, 162, 215 



Stephanodiscus, number of, 86, 129 



Stratification, thermal, 2, 20 



Sulphur, 54 



Summary of results, 141 



Temperature of water, 23 

 Thermocline. See mesolimnion 

 Total plankton, defined, 92 



chemical composition of, 97 



mean quantity of, 97 



per unit area, 98, 102, 122, 139 



quantity of, 92, 119, 137, 148 

 Turner, 161 



Vallisneria, analysis of, 165, 215 

 Volk, 167, 171 



Volvox, analysis of, 162, 215 

 number of, 111 



Water, nitrogen in, 73 



quantity of, 23 



temperature of, 23 

 Water bloom, 18 

 Weight of organisms, 57, 155 

 Whipple and Jackson, 58, 161, 162, 164 



Zygoptera, analysis of, 174, 215 



