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

By Benjamin Franklin

Page 158

which philosophers had endeavoured in vain
to account for, viz., that the temperature of the human body, when in
health, never exceeds 96 degrees of Fahrenheit's thermometer, although
the atmosphere which surrounds it may be heated to a much greater
degree. This he attributed to the increased perspiration and consequent
evaporation produced by the heat.

In a letter to Mr. Small, of London, dated in May, 1760, Dr. Franklin
makes a number of observations, tending to show that, in North America,
northeast storms begin in the southwest parts. It appears, from actual
observations, that a northeast storm, which extended a considerable
distance, commenced at Philadelphia nearly four hours before it was felt
at Boston. He endeavoured to account for this by supposing that, from
heat, some rarefication takes place about the Gulf of Mexico; that the
air farther north, being cooler, rushes in, and is succeeded by the
cooler and denser air still farther north, and that thus a continued
current is at length produced.

The tone produced by rubbing the brim of a drinking-glass with a wet
finger had been generally known. A Mr. Puckeridge, an Irishman, by
placing on a table a number of glasses of different sizes, and tuning
them, by partly filling them with water, endeavoured to form an
instrument capable of playing tunes. He was prevented, by an untimely
end, from bringing his invention to any degree of perfection. After his
death some improvements were made upon his plan. The sweetness of the
tones induced Dr. Franklin to make a variety of experiments; and he at
length formed that elegant instrument which he has called the
_Armonica_.

In the summer of 1762 he returned to America. On his passage he observed
the singular effect produced by the agitation of a vessel containing
oil floating on water. The surface of the oil remains smooth and
undisturbed, while the water is agitated with the utmost commotion. No
satisfactory explanation of this appearance has, we believe, ever been
given.

Dr. Franklin received the thanks of the Assembly of Pennsylvania, "as
well for the faithful discharge of his duty to that province in
particular, as for the many and important services done to America in
general during his residence in Great Britain." A compensation of
5000_l._, Pennsylvania currency, was also decreed him for his service
during six years.

During his absence he had been annually elected member of the Assembly.
On his return to Pennsylvania he again took his seat in this body, and
continued a steady defender of the liberties of the people.

In December, 1762, a circumstance which caused great alarm in the
province took place. A number of

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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 91
April 19th, 1753.
Page 100
The disputes between the proprietaries and the people continued in full force, although a war was raging on the frontiers.
Page 115
I was born in Boston, New England, and owe my first instructions in literature to the free grammar schools established there.
Page 116
And if the number of appliers so entitled should be so large as that the sum will not suffice to afford to each as much as might otherwise not be improper, the proportion to each shall be diminished, so as to afford to every one some assistance.
Page 137
21.
Page 139
When it is well charged it begins to move; the bullet nearest to a pillar moves towards the thimble on that pillar, and passing by electrifies it, and then pushes itself from it; the succeeding bullet, which communicates with the other surface of the glass, more strongly attracts that thimble, on account of its being before electrified by the other bullet; and thus the wheel encreases its motion till it comes to such a height as that the resistance of the air regulates it.
Page 141
Which shews that bodies, having less than the common quantity of electricity, repel each other, as well as those that have more.
Page 161
And though I have taken up the pieces of glass between my fingers immediately after this melting, I never could perceive the least warmth.
Page 176
FRANKLIN.
Page 213
S.
Page 219
But let us have recourse to experiments.
Page 226
A.
Page 232
When the wires are about two inches apart, the charge of a three pint bottle, darting from one to the other,.
Page 236
--Electrical.
Page 270
Hence is collected, that a pointed rod erected _between two tall chimnies_, and very little higher (an instance of which I have seen) cannot have so good an effect, as if it had been erected on one of the chimneys, its whole length above it.
Page 272
OBSERVATION.
Page 290
Cet honnête ecclésiastique arrive près de la machine, & voyant qu'il n'y avoit point de danger, met lui-même la main â l'oeuvre & tire de fortes étincelles.
Page 311
_Copper_, manner of covering houses with, ii.
Page 337
151.
Page 338
medical effects of, _ibid.