. Bees; their habits, management and treatment. Bees. BEES, 33 The respiratory apparatus in insects is composed of tubes. These tubes open down the sides of the abdomen, in val- vular apertures, closely fring-ed with elastic hair, called spiracles, or breathing-holes. The spiracle^ communicate -vdth two large tubes that pass along- the sides of the abdo- men, and from them other tubes spring, traversing every portion of the body, serving as ligatures to keep the internal organs in their proper places, and piercing to the extremities even of the feet and antennse, so that an insect may be said
. Bees; their habits, management and treatment. Bees. BEES, 33 The respiratory apparatus in insects is composed of tubes. These tubes open down the sides of the abdomen, in val- vular apertures, closely fring-ed with elastic hair, called spiracles, or breathing-holes. The spiracle^ communicate -vdth two large tubes that pass along- the sides of the abdo- men, and from them other tubes spring, traversing every portion of the body, serving as ligatures to keep the internal organs in their proper places, and piercing to the extremities even of the feet and antennse, so that an insect may be said to breathe with every portion of its body. The cylindrical form of the tubes, together with the necessary flexibility, is preserved in a most wonderful manner. The breathing tubes are composed of several membranes. Between these a fine and very elastic thread is coiled, closely resembling a wire bell-spring. This arrangement preserves the tube"?; from being flattened, or contracted by any movement; while at the same time, so strong is this thread, that it can easily be removed from the tubes without breaking. I have removed two inches of the spiral thread of the breathing tubes of the humble bee. Even when separated from the tubes, the thread retains its elasticity, and when released from the forceps, springs into a spiral form again. .rig. 11.). Anatomy of Hmnbie Bi-v.* • From an original 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 Wood, J. G. (John George), 1827-1889. London, New York, G. Routledge and Sons
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Keywords: ., bookauthorwoodj, bookcentury1800, bookdecade1860, booksubjectbees
