Vie de Benjamin Franklin, écrite par lui-même - Tome II suivie de ses œuvres morales, politiques et littéraires

By Benjamin Franklin

Page 92

dans le cinquième paragraphe de leur rapport: «Que l'Angleterre
ne pouvoit avoir aucune relation avantageuse avec les terres en
question».--Pour qu'on se forme une opinion juste à cet égard, nous
donnerons un état de ce qu'étoient les frais de charroi, même durant la
dernière guerre avec la France, et lorsqu'il n'y avoit point de retour
de l'Ohio à Alexandrie. On verra que ces frais ne s'élevoient alors qu'à
un demi-sou anglais, par livre pesant; et nous le démontrerons de la
manière la plus certaine.

par quintal.

D'Alexandrie au fort Cumberland, par eau. » 1 s. 7 d.

De fort Cumberland à la Crique de la Pierre-Rouge,
à 14 piastres par voiture, portant
1500 livres pesant. » 4 2

» 5 9[59].

Si l'on considère que ce prix de charroi étoit établi en temps de
guerre, et lorsqu'il n'y avoit point d'habitans sur l'Ohio, nous ne
doutons point que tout homme intelligent ne conçoive qu'il est
aujourd'hui beaucoup moindre que ce qu'on paie journellement à Londres,
pour le transport des grosses étoffes de laine, de la quincaillerie et
des ustensiles de fer qu'on y envoie de plusieurs comtés d'Angleterre.

Voici ce que coûtent les charrois de Birmingham et de quelques autres
villes jusqu'à Londres.

De Birmingham. 4 s. par quintal,
De Walsall dans le Staffordshire. 5

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Text Comparison with Experiments and Observations on Electricity Made at Philadelphia in America

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4.
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But here we have a bottle containing at the same time a _plenum_ of electrical fire, and a _vacuum_ of the same fire; and yet the equilibrium cannot be restored between them but by a communication _without_! though the _plenum_ presses violently to expand, and the hungry vacuum seems to attract as violently in order to be filled.
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4.
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Lay the book on a glass or wax; and on the other end of the gold lines, set the bottle electrised: then bend the springing wire, by pressing it with a stick of wax till its ring approaches the ring of the bottle wire; instantly there is a strong spark and stroke, and the whole line of gold, which completes the communication between the top and bottom of the bottle, will appear a vivid flame, like the sharpest lightning.
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2.
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Thus you may circulate it, as Mr _Watson_ has shewn; you may also accumulate or substract it upon or from any body, as you connect that body with the rubber or with the receiver, the communication with the common stock being cut off.
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12.
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If the cut is through the picture 'tis not the worse.
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27.
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18.
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Hence a wet rat cannot be killed by the exploding electrical bottle, when a dry rat may.
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14.
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But that is not the case with bodies of any other figure.
Page 34
But the force with which the electrified body retains its atmosphere by attracting it, is proportioned to the surface over which the particles are placed; i.
Page 36
And this is constantly observable in these experiments, that the greater quantity of electricity on the pasteboard tube, the farther it strikes or discharges its fire, and the point likewise will draw it off at a still greater distance.
Page 39
True gold makes a darker stain, somewhat reddish; silver, a greenish stain.
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32.
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But the instant the parts of the glass so open'd and fill'd have pass'd the friction, they close again, and force the additional quantity out upon the surface, where it must rest till that part comes round to the cushion again, unless some non electric (as the prime conductor) first presents to receive it.
Page 48
I placed a glass plate under my cushion, to cut off the communication between the cushion and floor; then brought a small chain from the cushion into a glass of oil of turpentine, and carried another chain from the oil of turpentine to the floor, taking care that the chain from the cushion to the glass touch'd no part of the frame of the machine.
Page 50
But Take a wire bent in the form of a C, with a stick of wax fixed to the outside of the curve, to hold it by; and apply one end of this wire to the coating, and the other at the same time to the prime conductor, the phial will be discharged; and if the balls are not electrified before the discharge, neither will they appear to be so after the discharge, for they will not repel each other.