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The thorax is covered by the first three rings behind the head, and on it are six legs, two on each segment. The remainder of the caterpillar is abdominal and carries small pro-legs with which to help it cling to twigs and leaves, and the heavy anal props that support the vent.
The grub of the Capricorn is even more ingenious: it moves at the same time on its back and belly; instead of the useless legs of the thorax, it has a walking-apparatus almost resembling feet, which appear, contrary to every rule, on the dorsal surface. The Life and Love of the Insect, by J. Henri Fabre, translated by Alexander Teixeira de Mattos: chap. xi.
I magnetise a very fine needle by rubbing it with my bar magnet; I retain only the slenderest part, the point, some five or six millimetres long. I am a little puzzled as to the best way to fasten it on the insect's thorax. My assistant of the moment, the pharmaceutical student, requisitions all the adhesives in his laboratory.
Anomalies of the Lungs. Carper describes a fetus of thirty-seven weeks in whose thorax he found a very voluminous thymus gland but no lungs. These organs were simply represented by two little oval bodies having no lobes, with the color of the tissue of the liver. The heart had only one cavity but all the other organs were perfectly formed. This case seems to be unique.
That the glottis-closing muscles are too weak to withstand a powerful expiratory pressure is therefore an entirely erroneous statement. Owing to the small area of the under surfaces of the vocal cords, the air pressure against them is very small, in comparison with the total pressure exerted on the contents of the thorax by the expiratory contraction.
The entire body is of very solid consistency, and of a pale reddish-brown colour. The thorax or middle segment is armed with three pairs of sharp spines; the head, also, has a pair of similar spines proceeding from the cheeks behind.
But the ancestors of insects looked more like thousand-legs or centipedes, and here head and thorax are much less distinct. But in the annelid the mouth is on the second segment; here it is on the fourth. It has evidently travelled backward.
During the patient’s recovery from one of the abdominal attacks above mentioned, the gums were observed to be spongy, separated from the teeth and reverted, bleeding, and in various parts presenting the livid appearance of scorbutic gums. At the same period arose pains of an anomalous description, and of considerable severity about the shoulders and thorax.
Finding the Hellespont unguarded, he attacked the city of Lampsakus by sea, while Thorax, who had arrived at the same place with the land forces, attacked it on that side. He took the city by storm, and, gave it up to his soldiers to plunder.
His third arrow pierced her thorax, through and through, and lay on the ground beside her with only its feathers in the wound. My first arrow cut below the diaphragm, penetrated the stomach and liver, severed the gall ducts and portal vein. My second arrow passed completely through her abdomen and lay on the ground several yards beyond her.
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