A guide to the study of fresh-water biology / [by] James G. Needham [and] Paul R. Needham

General references -- part 1. Aids to the recognition of fresh-water algae, invertebrates, and fishes -- Keys, charts, tables -- 1. Algae -- Key 1 : Algae -- Plate 1A : Blue-green algae -- Plate 1B : Green algae -- Key 1C : Desmids (Desmidiaceae) -- Plate 1C : Desmids -- Key 1D : Diatoms (Bacillariophyceae) -- Plate 1D : Diatoms -- 2. Protozoans -- Table 2A : Protozoans -- Plate 2A : Protozoans -- Table 2B : Protozoans -- Plate 2B : Protozoans -- 3. Miscellaneous invertebrates -- Plate 3 : Miscellaneous invertebrates -- 4. Rotifer -- Key 4 : Rotifers -- Plate 4 : Rotifers -- 5. Molluscs (Mollusca) -- Key 5 : Molluscs -- Plate 5 : Molluscs -- 6. Crustaceans (Crustacea) -- Chart 6A : Classification of fresh-water crustacea -- Plate 6A : Crustaceans : Malacostracans and branchiopods -- Chart 6B : Recognition characteristics of fresh-water crustacea -- Plate 6B : Crustaceans : Cladocerons, Copepods, and Ostracods -- Key 6 : Crustaceans

Insects -- Key to the orders of aquatic insect larvae -- Chart : Recognition characteristics of commoner forms of aquatic insect larvae -- 7. Key 7 : Hellgrammites (Megaloptera and Neuroptera Larvae) -- Plate 7 : Miscellaneous insects -- 8. Stonefly Nymphs (Plecoptera) -- Key 8 : Stonefly Nymphs -- Plate 8 : Stonefly nymphs -- 9. Mayfly Nymphs (Ephemeroptera) -- Key 9 : Mayfly Nymphs -- Plate 9A : Mayfly Nymphs -- Plate 9B : Mayfly Nymphs -- 10. Dragonfly and Damselfly Nymphs (Odonata) -- Key 10 : Dragonfly and Damselfly Nymphs -- Plate 10A : Dragonfly Nymphs -- Plate 10B : Dragonfly Nymphs -- Plate 10C : Dragonfly Nymphs -- Plate 10D : Damselfly Nymphs -- 11. Water bugs (Hemiptera) -- Key 11 : Water bugs -- Plate 11 : Water bugs -- 12. Caddisfly larvae (Trichoptera) -- Key 12 : Caddisfly larvae -- Plate 12 : Caddisfly larval houses -- 13. Two-winged Flies (Diptera) -- Key 13 : Crane Fly Larvae -- Plate 13A : Crane Fly and Syrphus Fly Larvae -- Plate 13B : Miscellaneous Fly Larvae -- 14. Beetles (Coleoptera) -- Key 14A : Adults of common aquatic beetles -- Plate 14A : Larvae and adult beetles -- Key 14B : Larvae of common aquatic beetles -- Plate 14B : Larvae and adult beetles

15. Fresh-water fishes -- Definitions and counts of fish structures -- Key 15A : Fresh-water fishes -- Plate 15A : Fish structures -- Key 15B : Trout (Salmo) and Charrs (Salvelinus) -- Plate 15B : Fishes -- Key 15C : Perch (Percidae) -- Plate 15C : Fishes -- Key 15D : Sunfishes and Basses (Centrarchidae) -- Plate 15D : Young Pacific Salmon (Oncorhynchus) -- Key 15E : Adult Pacific Salmon (Oncorhynchus) -- Key 15F : Young Pacific Salmon (Oncorhynchus) -- part 2. Methods of sampling and analyzing aquatic organisms and their environments -- Equipment -- Caring for field collections -- Methods of taking quantitative bottom samples -- Distribution and abundance of stream-dwelling organisms -- Analyzing water for oxygen, carbon dioxide, and alkalinities -- Methods of collecting fishes -- Preservation of fishes -- Methods of collecting fish scales -- Stream and lake surveys -- Studies of aquatic environments -- Suggested outline for studies -- Glossary