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Durand, Loyal, Jr. (ed.) / Transactions of the Wisconsin Academy of Sciences, Arts and Letters
volume XXXI (1938)

James, Harry Raymond; Birge, Edward A.
A laboratory study of the absorption of light by lake waters,   pp. [1]-154 PDF (46.6 MB)


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 LIST OF ILLUSTRATIONS, PART I. r ' ~ r 
 Page 
Figs. 1 and 2. Diagrams of monochromator 16 
  Percentile absorption by distilled water. 
Fig. 3. General diagram, 4000-8000 A. 4 curves 26 
Fig. 4. Percentile curves, 6500-8000 A. 6 curves 27 
Fig. 5. Percentile curves, 4000-6500 A. 8 curves 28 
Fig. 6. Same as Fig. 5, plotted on semi-logarithmic scale 34 
Fig. 7. Effect of temperature on absorption 39 
  General diagrams for lake waters. 
Fig. 8. Solar energy curve, with visibility curve 50 
Fig. 9. Absorption by dilutions and by filtrates of same color 51 
Fig. 10. Absorption by observed and computed colors 52 
Fig. 11. Relation of organic carbon and color in lake waters 55 
Fig. 12~ Departure of single observations from mean; color 6 65 
Fig. 13. Departure of filtered waters; colors 3, 4, 8, 16-20 66 
  Mean total absorption curves. 
Fig. 14. Settled waters 68 
Fig. 15. Filtered waters 70 
Fig. 16. Dilutions 71 
Fig. 17. Comparison of results, James and Pietenpol 75 
Fig. 18. Von Aufsess and Erikson. Percentile curves 77 
  Effect of settling and filtration. 
Fig. 19. Settling; Devils Lake and Little Papoose Lake 79 
Fig. 20. Filtration; waters which filter to color 0 82 
Fig. 21. Filtration; waters of color 6 84 
Fig. 22. Filtration; waters of Groups I and II 86 
Fig. 23. Filtration; waters of Group I 89 
Fig. 24. Filtration; waters of Group II 91 
Fig. 25. Dilution; filtered water of Helmet Lake 93 
Fig. 26. Dilution; unfiltered water of Mary Lake 94 
Fig. 27. Absorption curves, 3650-7600 A. 6 settled waters 95 
Fig. 28. Same for 10 filtered waters 96 
 Analysis of absorption; remainder and factor curves. 
Fig. 29. Total and remainder curves; settled waters 113 
Fig. 30.' Total and remainder curves; filtered waters 114 
Fig. 31. Remainder and factor curves; settled waters 115 
Fig. 32. Remainder and factor curves; filtered waters 116 
  Analysis of absorption; 2-component analysis. 
Fig. 33. Marl Lake 117 
Fig. 34. Horsehead Lake 118 
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