. The honey-bee; its nature, homes and products. Bees. TtiE ABDOMEN. 117 reach the head, in which are found two air-chambers of considerable size. Reasons for this distribution of the secreting vessels may be found, on the one hand, in the need of the oxygenation of the tissues, especially those connected with the nutrition of the ganglia of highest functions; and, on the other, in the requirements of buoyancy in the segments relatively the heaviest, and destitute of organs of support in the atmosphere, such as the wings Fig. 33.—Air-sacs of Worker. A confirmation of the second of th
. The honey-bee; its nature, homes and products. Bees. TtiE ABDOMEN. 117 reach the head, in which are found two air-chambers of considerable size. Reasons for this distribution of the secreting vessels may be found, on the one hand, in the need of the oxygenation of the tissues, especially those connected with the nutrition of the ganglia of highest functions; and, on the other, in the requirements of buoyancy in the segments relatively the heaviest, and destitute of organs of support in the atmosphere, such as the wings Fig. 33.—Air-sacs of Worker. A confirmation of the second of these purposes is derived from the remarkable fact, that in the queen bee, who does not fly more than once or twice in her life, the great air-sacs of the abdomen are almost obliterated, their space being needed for the large ovaries. The structure of the trachece is very remarkable. Under a powerful microscope they are seen to con- sist of a double membrane, between the two coats of. 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 Harris, William Hetherington, 1835-. London, The Religious tract society
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Keywords: ., bo, bookcentury1800, bookdecade1880, booksubjectbees, bookyear1884
