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

By Benjamin Franklin

Page 175

works of Dr. Stark, including the experiments alluded to,
have since been published. _Editor._

[39] Dr. Perkins. _Editor._

[40] Boston is an old town, and was formerly the seat of all the
trade of the country, that was carried on by sea. New towns, and
ports, have, of late, divided the trade with it, and diminished its
inhabitants, though the inhabitants of the country, in general, have
greatly increased.


_In Answer to the preceding._

_Philadelphia, Aug. 13, 1752._


I received your favour of the 3d instant. Some time last winter I
procured from one of our physicians an account of the number of
persons inoculated during the five visitations of the small-pox we
have had in twenty-two years; which account I sent to Mr. W. V. of
your town, and have no copy. If I remember right, the number exceeded
eight hundred, and the deaths were but four. I suppose Mr. V. will
show you the account, if he ever received it. Those four were all
that our doctors allow to have died of the small-pox by inoculation,
though I think there were two more of the inoculated who died of the
distemper; but the eruptions appearing soon after the operation, it
is supposed they had taken the infection before, in the common way.

I shall be glad to see what Dr. Douglass may write on the subject. I
have a French piece printed at Paris, 1724, entitled, _Observations
sur la Saignée du Pied, et sur la Purgation au commencement de la
Petite Verole, & Raisons de doubte contre l' Inoculation._--A letter
of the doctor's is mentioned in it. If he or you have it not, and
desire to see it, I will send it.--Please to favour me with the
particulars of your purging method, to prevent the secondary fever.

I am indebted for your preceding letter, but business sometimes
obliges one to postpone philosophical amusements. Whatever I
have wrote of that kind, are really, as they are entitled, but
_Conjectures_ and _Suppositions_; which ought always to give place,
when careful observation militates against them. I own I have too
strong a penchant to the building of hypotheses; they indulge my
natural indolence: I wish I had more of your patience and accuracy in
making observations, on which, alone, true philosophy can be founded.
And, I assure you, nothing can be more obliging to me, than your kind
communication of those you make, however they may disagree with my
pre-conceived notions.

I am sorry to hear that the number of your inhabitants decreases. I
some time since, wrote a

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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 35
He had been one of the French prophets; and knew how to imitate their supernatural agitations.
Page 63
Before I relate the particulars of my entrance into business, it may be proper to inform you what was at that time the state of my mind as to moral principles, that you may see the degree of influence they had upon the subsequent events of my life.
Page 107
Page 111
In the debates to which this memorial gave rise, several attempts were made to justify the trade.
Page 137
If now the picture be moderately electrified, and another person take hold of the frame with one hand, so that his fingers touch its inside gilding, and with the other hand endeavour to take off the crown, he will receive a terrible blow, and fail in the attempt.
Page 143
Page 149
Page 155
But that is not the case with bodies of any other figure.
Page 162
From the before-mentioned law of electricity, that points as they are more or less acute, draw on and throw off the electrical fluid with more or less power, and at greater or less distances, and in larger or smaller quantities in the same time, we may see how to account for the situation of the leaf of gold suspended between two plates, the upper one continually electrified, the under one in a person's hand standing on the floor.
Page 207
Page 219
To try this, let a wire be fixed perpendicularly on the plate of an air pump, having a leaden ball on its upper end; let another wire, passing through the top of a receiver, have on each end a leaden ball; let the leaden balls within the receiver, when put on the air pump, be within two or three inches of each other: the receiver being exhausted, the spark given from a charged phial to the upper wire will pass through rarefied air, nearly approaching to a vacuum, to the lower wire, and I suppose in a right line, or nearly so; the small portion of air remaining in the receiver, which cannot be entirely exhausted, may possibly cause it to deviate a little, but perhaps not sensibly, from a right line.
Page 223
This I sometimes practise: but such pieces are fit only to be seen by friends.
Page 251
--No part of the chimney was damaged (_f_), only at the foundation (_g_), where it was shattered almost quite round, and several bricks were torn out (_h_).
Page 256
I heated the large stone in boiling water.
Page 275
I read it with great pleasure, and beg you to accept my sincere thanks for it.
Page 283
been forced from one extremity of the steel to the other, it is not easy for it to return; and thus a bar of steel is converted into a permanent magnet.
Page 295
This is an effect which I have constantly observed, but do not think that it proceeds from an attractive quality in the exterior surface of the phial, but in those light bodies themselves, which seem to be attracted by the phial.
Page 304
forts in the back settlements of, no security against France, 99.
Page 314
loves water and subsists in it, 203.
Page 323
conduct more lightning in proportion to their thickness, 282.