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Metrology vouches for the hundredth of a milligramme in a kilogramme; that is to say, that it estimates the hundred-millionth part of the magnitude studied. We may as in the case of the lengths ask ourselves whether this already admirable precision can be surpassed; and progress would seem likely to be slow, for difficulties singularly increase when we get to such small quantities.
He began in his measured tones, in a voice which handles words as the weight of a usurer weighs gold pieces to the milligramme: "Gentlemen, I believe I shall express our common sentiment in first of all establishing a point which shall govern our meeting.... We are here, it is understood, to bring about the work of reconciliation between two men, two gentlemen whom we know, whom we esteem I might better say, whom we all love.".... He turned, in pronouncing those words, successively to each of his three listeners, who all bowed, with the exception of the Marquis.
Well, at the end of ten days you would have taken a centigramme, at the end of twenty days, increasing another milligramme, you would have taken three hundred centigrammes; that is to say, a dose which you would support without inconvenience, and which would be very dangerous for any other person who had not taken the same precautions as yourself.
"Well," replied Monte Cristo "suppose, then, that this poison was brucine, and you were to take a milligramme the first day, two milligrammes the second day, and so on.
The images are reversed upon the dial, but practice soon causes this petty difficulty to disappear. This number of divisions indicates the number of milligrammes and fractions of a milligramme by which it is necessary to shift the counterpoise on its arm in order to obtain a perfect equilibrium, which latter is verified by a simple reading.
Then we count the difference of the number of the divisions made by the needle to the right and left of zero. The value of each division of this dial varies from 3 to 10 milligrammes according as the balance shows 0.1 or 0.5 milligramme.
He began in his measured tones, in a voice which handles words as the weight of a usurer weighs gold pieces to the milligramme: "Gentlemen, I believe I shall express our common sentiment in first of all establishing a point which shall govern our meeting.... We are here, it is understood, to bring about the work of reconciliation between two men, two gentlemen whom we know, whom we esteem I might better say, whom we all love.".... He turned, in pronouncing those words, successively to each of his three listeners, who all bowed, with the exception of the Marquis.
This test is delicate, and will detect 1/1000 of a milligramme, but it is not quantitative. Persons using these preparations may suffer from catarrhal symptoms, rashes on the neck, ears, and face, thirst, nausea, pain in stomach, vomiting, headache, perhaps peripheral neuritis and loss of patellar reflex.
I find that he is only a third to half the size of the other sex, as far as I can judge by sight alone. To obtain exactly the respective quantities of substance, I should need delicate balances, capable of weighing down to a milligramme. My clumsy villager's scales, on which potatoes may be weighed to within a kilogramme or so, do not permit of this precision.
Weber and Kohlrausch have calculated that, if the quantity of electricity associated with one milligramme of hydrogen in water were diffused over a cloud at a height of 1000 metres above the earth, it would exert upon an equal quantity of the opposite electricity at the earth's surface an attractive force of 2,268,000 kilogrammes. Faraday, sa Vie et ses Travaux, p. 20.
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