fire gives repulsion to the
particles of water, and destroys their attraction of cohesion; hence common
fire, as well as electrical fire, assists in raising vapours.
17. Particles of water, having no fire in them, mutually attract each
other. Three particles of water then being attached to the three particles
of a triangle of air, would by their mutual attraction operating against
the air's repulsion, shorten the sides and lessen the triangle, whereby
that portion of air being made denser, would sink to the earth with its
water, and not rise to contribute to the formation of a cloud.
18. But if every particle of water attaching itself to air, brings with it
a particle of common fire, the repulsion of the air being assisted and
strengthened by the fire, more than obstructed by the mutual attraction of
the particles of water, the triangle dilates, and that portion of air
becoming rarer and specifically lighter rises.
19. If the particles of water bring electrical fire when they attach
themselves to air, the repulsion between the particles of water
electrified, joins with the natural repulsion of the air, to force its
particles to a greater distance, whereby the triangles are dilated, and the
air rises, carrying up with it the water.
20. If the particles of water bring with them portions of _both sorts_ of
fire, the repulsions of the particles of air is still more strengthened and
increased, and the triangles farther enlarged.
21. One particle of air may be surrounded by twelve particles of water of
equal size with itself, all in contact with it; and by more added to those.
22. Particles of air thus loaded would be drawn nearer together by the
mutual attraction of the particles of water, did not the fire, common or
electrical, assist their repulsion.
23. If air thus loaded be compressed by adverse winds, or by being driven
against mountains, &c. or condensed by taking away the fire that assisted
it in expanding; the triangles contract, the air with its water will
descend as a dew; or, if the water surrounding one particle of air comes in
contact with the water surrounding another, they coalesce and form a drop,
and we have rain.
24. The sun supplies (or seems to supply) common fire to all vapours,
whether raised from earth or sea.
25. Those vapours which have both common and electrical fire in them, are
better supported, than those which have only common fire in them. For when
vapours rise into the coldest region above the earth, the cold will not
diminish the electrical fire, if it doth the common.
My father had also by the same wife, four children born in America, and ten others by a second wife, making in all seventeen.Page 39
gave me an order for that purpose.Page 48
I could not find a single one with my name written on it, as committed to my care; but I selected six or seven, which I judged from the direction to be those that were intended for me; particularly one to Mr.Page 54
But the entertainment was in her conversation.Page 59
This future increase of wages was the bait he had made use of to ensnare them.Page 60
Keimer himself treated me with great civility, and apparent esteem; and I had nothing to give me uneasiness but my debt to Vernon, which I was unable to pay, my savings as yet being very little.Page 100
Enraged at the obstinacy, and what they conceived to be unjust proceedings of their opponents, the assembly at length determined to apply to the mother-country for relief.Page 117
All the directions herein given respecting the disposition and management of the donation to the inhabitants of Boston, I would have observed respecting that to the inhabitants of Philadelphia; only, as Philadelphia is incorporated, I request the corporation of that city to undertake the management, agreeable to the said directions: and I do hereby vest them with full and ample powers for that purpose.Page 163
Turn its tail towards the prime conductor, and then it flies to your finger, and seems to nibble it.Page 165
the bullet is from its wire.Page 167
Near the bell was fixed an iron hammer to strike the hours; and from the tail of the hammer a wire went down through a small gimlet-hole in the floor that the bell stood upon, and through a second floor in like manner; then horizontally under and near the plaistered cieling of that second floor, till it came near a plaistered wall; then down by the side of that wall to a clock, which stood about twenty feet below the bell.Page 219
therefore the column aforesaid must be in a denser state than its neighbouring air.Page 272
And it seems more eligible, that the lightning should fall on the point of the conductor (provided to convey it into the earth) than on any other part of the building, _thence_ to proceed to such conductor.Page 295
_ 68.Page 298
Franklin had performed them, must prove his assertion, alters them without giving any reason for it, and makes them in a manner that proves nothing.Page 299
phial's being charged when held in a man's hand, only proves that water will conduct the electric matter.Page 301
_Accidents_ at sea, how to guard against, ii.Page 329
_North-east_ storms in America, account of, ii.Page 331
_Philadelphia_, Franklin's first arrival at, i.