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

By Benjamin Franklin

Page 259

the smallest.--A square shank comes from
its thickest end through the box, on which shank a wheel is fixed
by a screw. This wheel serves as a fly to make the motion equable,
when the spindle, with the glasses, is turned by the foot like a
spinning-wheel. My wheel is of mahogany, eighteen inches diameter,
and pretty thick, so as to conceal near its circumference about 25lb
of lead.--An ivory pin is fixed in the face of this wheel, and about
four inches from the axis. Over the neck of this pin is put the loop
of the string that comes up from the moveable step to give it motion.
The case stands on a neat frame with four legs.

To fix the glasses on the spindle, a cork is first to be fitted in
each neck pretty tight, and projecting a little without the neck,
that the neck of one may not touch the inside of another when put
together, for that would make a jarring.--These corks are to be
perforated with holes of different diameters, so as to suit that
part of the spindle on which they are to be fixed. When a glass is
put on, by holding it stiffly between both hands, while another turns
the spindle, it may be gradually brought to its place. But care must
be taken that the hole be not too small, lest in forcing it up the
neck should split; nor too large, lest the glass not being firmly
fixed should turn or move on the spindle, so as to touch and jar
against its neighbouring glass. The glasses thus are placed one in
another, the largest on the biggest end of the spindle which is to
the left hand; the neck of this glass is towards the wheel, and the
next goes into it in the same position, only about an inch of its
brim appearing beyond the brim of the first; thus proceeding, every
glass when fixed shews about an inch of its brim (or three quarters
of an inch, or half an inch, as they grow smaller) beyond the brim
of the glass that contains it; and it is from these exposed parts of
each glass that the tone is drawn, by laying a finger upon one of
them as the spindle and glasses turn round.

My largest glass is G, a little below the reach of a common voice,
and my highest G, including three compleat octaves.--To distinguish
the glasses the more readily to the eye, I have painted the apparent
parts of the glasses within side, every semitone white,

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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 20
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Page 25
Pope judiciously observes, Men must be taught, as if you taught them not, And things unknown propos'd--as things forgot.
Page 27
It was undoubtedly dishonourable to.
Page 37
This visit stung my brother to the soul; for when, shortly after, my mother spoke to him of a reconciliation, and a desire to see us upon good terms, he told her that I had so insulted him before his men, that he would never forget or forgive it: in this, however, he was mistaken.
Page 38
The sloop having touched at Newport in Rhode Island, I paid a visit to my brother John, who had for some years been settled there, and was married.
Page 49
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Page 68
But Dr.
Page 100
Nor was their confidence ill-founded.
Page 105
In his passage through Holland he learned from the watermen the effect which a diminution of the quantity of water in canals has, in impeding the progress of boats.
Page 117
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Page 158
Now if the fire of electricity and that of lightning be the same, as I have endeavoured to shew at large, in a former paper, this pasteboard tube and these scales may represent electrified clouds.
Page 174
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Page 208
A strange.
Page 211
When they were thus placed, I applied the other end of my rod to the prime conductor, and they all dropped together.
Page 260
Page 263
A person apprehensive of danger from lightning, happening during the time of thunder to be in a house not so secured, will do well to avoid sitting near the chimney, near a looking glass, or any gilt pictures or wainscot; the safest place is in the middle of the room (so it be not under a metal lustre suspended by a chain) sitting in one chair and laying the feet up in another.
Page 287
Page 297
If the Abbé's opinion be right, that the exterior surface, communicating with the coating, is charged, as well as the interior, communicating with the hook; how can I, who stand on wax, discharge both these phials, when it is well known I could not discharge one of them singly? Nay, suppose I have drawn the electric matter from both of them, what becomes of it? For I appear to have no additional quantity in me when the experiment is over, and I have not stirred off the wax: wherefore this experiment fully convinces me, that the exterior surface is not charged; and not only so, but that it wants as much electric matter as the inner has of excess: for by this supposition, which is a part of Mr.
Page 304
wars carried on there against the French, not merely in the cause of the colonies, 105.