Elementary text-book of zoology, general Elementary text-book of zoology, general part and special part: protozoa to insecta elementarytextbo00clau Year: 1892 EESPlRATOaX ORGAXS. 69 oxygen dissolved in water which respiration is found in animals low in the scale of life in which the metabolic processes are less energetic (worms, molluscs, and fishes). Organs of aquatic respiration, or gills, have the form of external appendages possessing as large a surface extension as possible. They consist of simple or antler- shaped or dendritically branched processes (fig. 63 a, h), or of is available. H
Elementary text-book of zoology, general Elementary text-book of zoology, general part and special part: protozoa to insecta elementarytextbo00clau Year: 1892 EESPlRATOaX ORGAXS. 69 oxygen dissolved in water which respiration is found in animals low in the scale of life in which the metabolic processes are less energetic (worms, molluscs, and fishes). Organs of aquatic respiration, or gills, have the form of external appendages possessing as large a surface extension as possible. They consist of simple or antler- shaped or dendritically branched processes (fig. 63 a, h), or of is available. Hence this form of
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