Expériences et observations sur l'électricité faites à Philadelphie en Amérique

By Benjamin Franklin

Page 108

l'eau de la mer. Ces verges de fer bien
pointuës tireroient probablement & tireroit sans bruit le feu électrique
hors du nuage, avant qu'il vint assez près pour frapper & pour causer
aucun désastre.

Mais avant que d'en venir à cet expédient il restoit un problême à
résoudre. Toutes les observations pouvoient paroître bien faites, toutes
les réflexions naturelles, tous les raisonnemens suivis, toutes les
inductions justes, sans que pour cela le succès répondît à la
vraisemblance. Il étoit question de décider avant tout si les nuées qui
contiennent la foudre sont électrisées ou non; c'est ce doute qui a
empêché M. Franklin de prononcer hardiment sur toute cette matière. Ce
que sa pénétration & la justesse de son raisonnement lui ont fait
reconnoître, sa droiture & sa sincérité n'ont osé l'assurer. Tout ce
qu'il a pû faire dans cette circonstance embarrassante, ç'a été de
proposer sa conjecture, & de nous enseigner les moyens de décider la
question. En suivant la route qu'il nous a tracée, j'ai obtenu une
satisfaction complette. Voici les préparatifs, le procèdé & le succès.

1º. J'ai fait faire à Marly-la-Ville, situé à six lieuës de Paris, au
milieu d'un belle plaine, dont le sol est fort élevé, une verge de fer
d'environ un pouce diamètre, longue de quarante pieds & fort pointuë par
son extrémité supérieure; pour lui ménager une pointe plus fine, je l'ai
fait armer d'acier trempé & ensuite brunir, au défaut de dorure, pour la
préserver de la rouille; outre cela cette verge de fer est courbée vers
son extrémité inférieure en deux coudes à angles aigus quoiqu'arondis;
le premier coude est éloigné de deux pieds du bout inférieur, & le
second est en sens contraire à trois pieds du premier.

2º. J'ai fait planter dans un jardin trois grosses perches de vingt-huit
à vingt-neuf pieds disposées en triangle, & éloignées les unes des
autres d'environ huit pieds; deux de ces perches sont contre un mur, &
la troisiéme est au-dedans du jardin. Pour les affermir toutes ensemble
l'on a cloué sur chacune des entre-toises à vingt pieds de hauteur, &
comme le grand vent agitoit encore cette espèce d'édifice, l'on a
attaché au haut de chaque perche de longs cordages, qui tenant lieu
d'aubans, répondent par le bas à de bons piquets fortement enfoncés en
terre à plus de vingt pieds des perches.

3º. J'ai fait construire entre les deux perches voisines du mur, &
adosser contre ce mur une petite guérite de bois capable de contenir un
homme & une table.

4º. J'ai fait placer au milieu de la guérite une petite table d'environ
un demi pied de hauteur,

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Text Comparison with Memoirs of Benjamin Franklin; Written by Himself. [Vol. 1 of 2] With His Most Interesting Essays, Letters, and Miscellaneous Writings; Familiar, Moral, Political, Economical, and Philosophical, Selected with Care from All His Published Productions, and Comprising Whatever Is Most Entertaining and Valuable to the General Reader

Page 0
He never loses sight of common sense in any of his speculations.
Page 4
And now I speak of thanking God, I desire with all humility to acknowledge that I attribute the mentioned happiness of my past life to his divine providence, which led me to the means I used and gave the success.
Page 12
intention of making them was warm in my mind.
Page 20
But having another profession, and conceiving myself a pretty good workman, I offered my services to a printer of the place, old Mr W.
Page 36
The governor, seeming to like my company, had me frequently at his house, and his setting me up was always mentioned as a fixed thing.
Page 50
We went together to Burlington, where I executed the whole to satisfaction; and he received so large a sum for the work as to be enabled thereby to keep himself longer from ruin.
Page 52
To lessen the rent (which was then but twenty-four pounds a year, though I have since known it to let for seventy), we took in Thomas Godfrey, a glazier, and his family, who were to pay a considerable part of it to us, and we to board with them.
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| | * | | | | * | | +------+------+-----+-----+-----+-----+-----+-----+ | Fru.
Page 87
What reverses may attend the remainder is in the hand of Providence: but if they arrive, the reflection on past happiness enjoyed ought to help his bearing them with more resignation.
Page 91
"And that God will certainly reward virtue and punish vice, either here or hereafter.
Page 111
every man's donation would be doubled: thus the clause worked both ways.
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6.
Page 126
Among these I saw some letters of the general to the ministry, speaking highly of the great service I had rendered the army, and recommending me to their notice.
Page 136
Kinnersly, an ingenious neighbour, who, being out of business, I encouraged to undertake showing the experiments for money, and drew up for him two lectures, in which the experiments were ranged in such order, and accompanied with explanations in such method, as that the foregoing should assist in comprehending the following.
Page 141
There were then two of the packet-boats which had been long in readiness, but were detained for the general's letters, which were always to be ready _to-morrow_.
Page 146
We had a good observation, and the captain judged himself so near our port (Falmouth), that if we made a good run in the night, we might be off the mouth of that harbour in the morning; and, by running in the night, might escape the notice of the enemy's privateers, who often cruised near the entrance of the channel.
Page 154
The philosophers were disposed to account for the phenomena rather from a difference in the quantity of electricity collected, and even Du Faye himself seems at last to have adopted this doctrine.
Page 156
The regard which they had entertained for him was rather increased by a personal acquaintance.
Page 188
_ Will it not take a long time to establish that manufacture among them; and must they not, in the mean while, suffer greatly? _A.
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There are some (I am ashamed to hear it) who would extenuate the enormous wickedness of these actions, by saying, "The inhabitants of the frontiers are exasperated with the murder of their relations by the enemy Indians in the present war.