. Flashlights on nature [microform]. Insects; Plants; Insectes; Plantes. Hkitisii Hloodsickkrs 241 as a locomotive device everybody kno\v> who lias once tried chivvyiiiij a few healthy mosquito larv;e round the brimming sea of his bedroom basin. The breathing - tube deserves a little longer notice. By its means air is conveyed direct into the internal air-channels of the insect, which do not form lungs, but ramify like arteries all over the body. We carry our blood to the lungs to be aerated ; the insects carry the oxygen to the blood. To take in air, the larva fre- quently rises to near th
. Flashlights on nature [microform]. Insects; Plants; Insectes; Plantes. Hkitisii Hloodsickkrs 241 as a locomotive device everybody kno\v> who lias once tried chivvyiiiij a few healthy mosquito larv;e round the brimming sea of his bedroom basin. The breathing - tube deserves a little longer notice. By its means air is conveyed direct into the internal air-channels of the insect, which do not form lungs, but ramify like arteries all over the body. We carry our blood to the lungs to be aerated ; the insects carry the oxygen to the blood. To take in air, the larva fre- quently rises to near the surface, as vou see him doing in Xo. 4 ; then he stands on his head, cocks up his tail, and pushes t)ut his air-tube. Indeed, when at rest this is his usual attitude. Xo. 5, which, of course, is very hignly magnified, shows his tail in the act of taking in a good gulp ot oxygen. The little valves, or doors, which cover the air-tube are here opened radially, and the larva is breathing. To the right you see the position of the tube after he has taken in a long g. Ml. 5. IIIK lAKVAS HRKA I inMi-l UKl AM> (il' 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 Allen, Grant, 1848-1899. Toronto : W. Briggs
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Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectin, booksubjectplants
