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Updated: May 17, 2025
I had not provided myself with the 'torsion forceps', but relied on the hold I should have on the vessel by means of a pair of common artery forceps; and the effect of imperfect instruments beautifully established the power of torsion in arresting hemorrhage. Two elliptical incisions were made on the face of the tumour, and prolonged anteriorly and posteriorly about an inch from it.
With regard to the slight oscillations of torsion which he has specially studied, M. Bouasse arrives at the conclusion, in an acute discussion, that we hardly know anything more than was proclaimed a hundred years ago by Coulomb.
The application of torsion or the twisting of the arteries by a pair of forceps which will firmly grasp them has, in a great degree, superseded every other mode of castration, both in the larger and the smaller domesticated animals.
The hormone theory supposes that the somatic modifications due to external stimuli in the case of the Flat-fish the disappearance of pigment from the lower side, the torsion of the orbital region of the skull, and the extension of the dorsal fin modify the hormones given off by these parts, increasing some and decreasing others, and that these changes in the hormones affect the determinants, whatever they are, in the gametocytes within the body.
Soft iron soon loses the structure, or becomes enfeebled, under the constant to and fro torsions requisite where we desire a constant change of polarity, as described later in the magnetic bells. Hard steel preserves its structure, but its molecular rigidity is so great that we obtain but mere traces of any change of polarity by torsion.
Terrier speaks of splenectomy for torsion or twisting of the pedicle, and such is mentioned by Sir Astley Cooper, who has found records of only four such cases. Conklin reports a successful case of splenectomy for malarial spleen, and in reviewing the subject he says that the records of the past decade in operations for simple hypertrophy, including malaria, show 20 recoveries and eight deaths.
At the beginning and end of the stroke when the crank is vertical, no force of torsion can be exerted on the crank shaft by the crank, but this force is at its maximum when the crank is horizontal.
The United States Torsion Balance Company, of New York, has recently brought before the public a new form of balance which presents so many ingenious and excellent features that we illustrate it below, on the present page. It consists of a beam, A, which is firmly attached to a wire or band, B, at right angles to it, and which wire is tightly stretched by any convenient means.
Other methods have been employed in late years by other experimenters, such as the method of Baron Eötvös, founded on the use of a torsion lever, the method of the ordinary balance, used especially by Professors Richarz and Krigar-Menzel and also by Professor Poynting, and the method of M. Wilsing, who uses a balance with a vertical beam.
It is necessary to guard it from disturbances due to extraneous electric influences and the trembling of the ground. These can be eliminated completely by encircling the instrument in a metal case connected to earth, and mounting it on solid pillars in a still place. Heat also has a disturbing effect, and makes itself felt in the torsion of the fiber and the cage surrounding the lever.
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