The Complete Works in Philosophy, Politics and Morals of the late Dr. Benjamin Franklin, Vol. 2 [of 3]

By Benjamin Franklin

Page 67

earthen pots, unglazed, which let the
water gradually and slowly ooze through their pores, so as to keep
the outside a little wet, notwithstanding the continual evaporation,
which gives great coldness to the vessel, and the water contained
in it. Even our common sailors seem to have had some notion of this
property; for I remember, that being at sea, when I was a youth,
I observed one of the sailors, during a calm in the night, often
wetting his finger in his mouth, and then holding it up in the air,
to discover, as he said, if the air had any motion, and from which
side it came; and this he expected to do, by finding one side of his
finger grow suddenly cold, and from that side he should look for the
next wind; which I then laughed at as a fancy.

May not several phenomena, hitherto unconsidered, or unaccounted for,
be explained by this property? During the hot Sunday at Philadelphia,
in June 1750, when the thermometer was up at 100 in the shade, I
sat in my chamber without exercise, only reading or writing, with
no other cloaths on than a shirt, and a pair of long linen drawers,
the windows all open, and a brisk wind blowing through the house,
the sweat ran off the backs of my hands, and my shirt was often
so wet, as to induce me to call for dry ones to put on; in this
situation, one might have expected, that the natural heat of the body
96, added to the heat of the air 100, should jointly have created
or produced a much greater degree of heat in the body; but the fact
was, that my body never grew so hot as the air that surrounded it,
or the inanimate bodies immersed in the same air. For I remember
well, that the desk, when I laid my arm upon it; a chair, when I sat
down in it; and a dry shirt out of the drawer, when I put it on,
all felt exceeding warm to me, as if they had been warmed before a
fire. And I suppose a dead body would have acquired the temperature
of the air, though a living one, by continual sweating, and by the
evaporation of that sweat, was kept cold. May not this be a reason
why our reapers in Pensylvania, working in the open field, in the
clear hot sun-shine common in our harvest-time[15], find themselves
well able to go through that labour, without being much incommoded
by the heat, while they continue to sweat,

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Text Comparison with The Complete Works in Philosophy, Politics and Morals of the late Dr. Benjamin Franklin, Vol. 1 [of 3]

Page 12
And here let me with all humility acknowledge, that to divine providence I am indebted for the felicity I have hitherto enjoyed.
Page 28
He went to all the printing-houses in the town, and prejudiced the masters against me--who accordingly refused to employ me.
Page 38
Seeing no appearance of accommodating matters between my brother and me, he consented to my return to Philadelphia, advised me to be civil to every body, to endeavour to obtain general esteem, and avoid satire and sarcasm, to which he thought I was too much inclined; adding, that with perseverance and prudent economy, I might, by the time I became of age, save enough to establish myself in business; and that if a small sum should then be wanting, he would undertake to supply it.
Page 79
Franklin early saw the necessity of these; and, about the year 1728, formed the first fire company in this city.
Page 95
He applied to the assembly; and, after some opposition, obtained leave to bring in a bill, specifying, that as soon as two thousand pounds were subscribed, the same sum should be drawn from the treasury by the speaker's warrant, to be applied to the purposes of the institution.
Page 114
Francis Hopkinson, Esq.
Page 128
If the bottle had a _positive_ electrical atmosphere, as well as the wire, an electrified cork would be repelled from one as well as from the other.
Page 135
Then taking the bottle in one hand, and bringing a finger of the other near its mouth, a strong spark came from the water, and the shock was as violent as if the wire had remained in it, which shewed that the force did not lie in the wire.
Page 147
To shew this by an easy experiment: Take two round pieces of pasteboard two inches diameter; from the centre and circumference of each of them suspend by fine silk threads eighteen inches long, seven small balls of wood, or seven peas equal in goodness: so will the balls appending to each pasteboard, form equal equilateral triangles, one ball being in the centre, and six at equal distances from that, and from each other; and thus they represent particles of air.
Page 192
by any portion of common matter, the parts of that fluid, (which have among themselves a mutual repulsion) are brought so near to each other by the attraction of the common matter that absorbs them, as that their repulsion is equal to the condensing power of attraction in common matter; and then such portion of common matter will absorb no more.
Page 194
And I would beg leave to recommend it to the curious in this branch of natural philosophy, to repeat with care and accurate observation the experiments I have reported in this and.
Page 202
This experiment may be considered as a kind of ocular demonstration of the truth of Mr.
Page 227
But if the electric fire dissipates, or weakens in the water, as I fear it does, these experiments will not answer.
Page 232
_] I set the thermometer on an electric stand, with the chain N fixed to the prime conductor, and kept it well electrised a considerable time; but this produced no sensible effect; which shews, that the electric fire, when in a state of rest, has no more heat than the air, and other matter wherein it resides.
Page 244
By this it appears, that when the balls came together, the air surrounding the balls was just as much electrised as the conductor at that time; and more than the conductor, when that was reduced to its natural state.
Page 290
.
Page 315
matter, its properties, 217, 294.
Page 317
how generated in animated bodies, 79.
Page 320
will admit the electric fluid, when moderately heated, 345, 347.
Page 341
_Voyage_, from Boston to New York, i.