. Animal studies. ADAPTATIONS 311 forth in the water so as to maintain currents to bring fresh water in contact with them. Young mosquitoes (Fig. 187) do not have gills, but come up to the surface to breathe. The larvae, or wrigglers, breathe through a special. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Jordan, David Starr, 1851-1931; Kellogg, Vernon L. [from old catalog].

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Keywords: ., bookauthorjordanda, bookcentury1900, bookdecade1900, bookyear1903