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Updated: June 1, 2025
At one end was a polished surface that corresponded with a similar surface on a smaller stone that lay against it; the latter calculus was shaped like a lima bean, and weighed 60 grains. Hunt speaks of eight calculi removed from the urethra of a boy of five. Herman and the Ephemerides mention cases of calculi in the seminal vesicles.
It was introduced by the Greeks, who regarded a circle as differing infinitesimally from a polygon with a very large number of very small equal sides. It gradually grew in importance, until, when Leibniz invented the Infinitesimal Calculus, it seemed to become the fundamental notion of all higher mathematics.
It may perhaps be maintained, that with time and patience, one might train a rather stupid plough-boy to understand the differential calculus. This might be done with the help of an inward desire on the part of the boy to learn, but never otherwise.
If pain is not severe, or due to inflammatory distention of some undilatable part, to pressure on some nerve, to distention of some tube by a calculus or to some serious injury to the nerves, large doses of morphin are not needed. Small doses will act much more efficiently.
And, in regard to the former branch, we must not fail to hold in view that the very Calculus of Probabilities to which I have referred, forbids all idea of the extension of the parallel: forbids it with a positiveness strong and decided just in proportion as this parallel has already been long-drawn and exact.
But I stopped Charlie and went over to the Metropolitan Library; there I got me an expert an astronomer chap, as it happened, reading calculus in French for fun I gave him a twenty and I looked him in the eye.
Let us make the most of it. There are fifty-two Sundays in the year, making a total that is almost equivalent to the long vacation. It so happens that I have a glorious question to wrestle with today; that of Kepler's three laws, which, when explored by the calculus, are to show me the fundamental mechanism of the heavenly bodies.
By propounding the binomial theorem, the differential calculus, and the integral calculus, he began in 1665 the wonderful series of discoveries in pure mathematics, optics, and physics, which place him in the first rank of the philosophers of all time.
No one, as far as I am aware, has yet essayed to measure it. Nor have we any form of calculus or computation that can easily be applied. If we wish to compare the gross total of production effected to-day with that accomplished a hundred and fifty years ago, the means, the basis of calculation, is lacking. Vast numbers of the things produced now were not then in existence.
We will terminate our hasty review of diseases discussed in the Compendium by an abstract of Gilbert's views on vesical calculus and its treatment, which cover more than fifteen pages of his work. Stone and gravel arise from various viscous superfluities in the kidneys and bladder, which occasion difficulty in micturition.
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