INDEX. 



93 



Larvae copepod, table of numbers per 

 square meter in Green 



lake, 82. 

 table of numbers per 

 square meter in Lake 

 Winnebago, 82. 

 Leptodora, table of numbers per square 



meter in Lake Winnebago, 86. 

 Leptodora hyalina, annual distribution 



of, 36. 

 Limnocalanus macrurus, annual distribu- 

 tion of, 26. 



table ot num- 

 bers per sq. 

 meter in Green 

 lake, 79. 

 Lingbya, annual distribution of, 16. 



Marsh, 6, 10, 14, 22, 26, 31, 33, 51, 57, 62, 



68, 69. 

 Maxima of plankton, constituents produc- 

 ing, 39. 

 Measurement of plankton, method used, "9. 

 Melosira, annual distribution of, 12, 14. 

 Mendota, annual distribution of C. brevl- 

 spinoaus in, 26. 

 annual distribution of D. ore- 

 gones/s in, 24. 

 Merismopedia , annual distribution of, 15. 

 Methods of making collections, 8. 



Nassula, occurrence in Lake Winnebago, 



13. 

 Navicula, annual distribution of, 13. 

 Net, collecting, form of, 9. 

 Notholca foliacea, annual distribution of, 

 21. 

 longispina, annual distribution 

 of, 20. 



Object of study, 8. 



Oscillaria, annual distribution of, 16. 



Pediastrum, annual distribution of, 15. 

 Pelican lake, Diaptomus rare in, 60. 

 Plankton, amount in different years, 41. 

 collections, value of, 47. 

 comparison of collections over 

 muddy and stony bottoms, 59. 

 comparison of successive years, 



65. 

 constituents producing maxi- 

 ma, 39. 



Plankton, constituents, relative import- 

 ance of, 49. 



curves, comparison with curves 

 of constituents, 51. 



curves, comparison with temper- 

 ature curves, 49. 



maxima, produced largely by 

 plants, 49. 



method of examining, 10. 



method of measuring, 9. 



of Green lake, compared with 

 that of Lake Winnebago, 42. 



of other Wisconsin lakes com- 

 pared with Green lake, and 

 Lake Winnebago, 43. 



table of total volumes per sq. 

 meter in Green lake, 73. 



table of total volumes per sq, 

 meter in Lake Winnebago, 74. 



total annual distribution of, 38, 



total volumes per sq. meter in 

 various Wisconsin lakes, 75. 

 Pleurosigma, annual distribution of, 13. 

 Polyarthra platypera, annual distribu- 

 tion of, 20. 

 Poygan lake, 2. 



Reighard, 9, 52. 



Seligo, 19, 21, 22, 21, 32, 38. 

 Shallow lakes, definition of, 6, 

 Small deep lakes, 6. 

 Species, distribution of, 60. 

 Sphaerella, annual distribution of, 17. 

 Siaurastruin, annual distribution of, 15. 

 StephanodUcus, annual distribution of, 



13, 14. 

 Steuer, 24, 32, 36, 39, 52. 

 Stone lake, 2 



Stony Beach laboratory, 3. 

 Surirella, annual distribution of, 13. 

 Synchaeta pectinata, annual distribution 



of, 21. 

 Synedra acus var. delicallssima, annual 

 distribution of, 12, 14. 

 pulchella, annual distribution 

 of, 12. 

 Synura, annual distribution of, 18. 



Temperature curves, comparison with 



plankton curves, 49. 

 Thermocline, classification of lakes de- 

 pendent upon, 6. 

 relation of Daphnia puli- 

 caria to, 32. 

 Total plankton, annual distribution of, 38. 



