INDEX 



acanthocephalans, as parasites, 67 

 Acartia bifolosa, 29 



A. discauddtd, 29 

 acclimatization, 137 

 Aelosoma, respiration, 109 

 aerobic life, 5 



animals, 59 

 aerotropic animals, 95 

 aestivating fishes, 36 

 algae, as food, 57 



desiccation, 89 



in beach zone, 18 



in evolution, 1 1 



in saline pools, 34 



salt toleration, 71 



zonation, 54 

 alkaline solutions, fly larvae in, 70 

 alkali reserve, 59 

 Amazon River, 23 



dolphins, 27 - 



low oxygen, 60 

 Ambystomd, larva, respiration, 103 



reproduction, 131 

 Ambystoma opacum, reproduction, 

 131, 133 



A. maculdtum, reproduction, 

 131 

 Ameiurus, in mud, 87 

 Amid, in mud, 87 

 Amidtus, respiration, 104 

 Ampeliscd pusilld, 27 



in Ganges delta, 27 

 amphibians (see also frogs, toads, 

 newts, salamanders) 



ancestors, 37 



blood, 125 



evaporation, 88 



excretion, 129 



in fresh water, 15 



largely fresh water, 93 



metabolism, 101 



on ground, 96 



reproduction, 134, 135 



respiration, 103, 106, 110, 111 



sense organs, 128 



teeth, 137 

 amphipods (see also crustaceans) 



in Elbe estuary, 28 



in Ganges delta, 27 



in Hampshire estuary, 30 



in lakes, 42 



in salt marshes, 33 



on islands, 45 



salinity toleration, 34 

 amphistomes, as parasites, 141 

 Amphitrite, oxygen used, 58 

 Anabds, 60 



eyes, 128 



■ gills, 98 

 anadromous fishes, 27 



migrations, 23 

 anaerobic life, 5 



worms, 109 

 Ancylus, water-breathing, 96 

 anemones, 22 



in salt marsh, 33, 34 

 Anguilld, blood, 118 

 annelids (see also oligochaetes, poly- 

 chaetes, etc.) 



haemoglobin, 120 



193 



