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

By Benjamin Franklin

Page 189

a considerable heat. The smoke,
finding no passage upwards, turns over the top of the air-box, and
descends between it and the back plate to the holes in the bottom
plate, heating, as it passes, both plates of the air-box, and the
said back plate; the front plate, bottom and side plates are also all
heated at the same time. The smoke proceeds in the passage that leads
it under and behind the false back, and so rises into the chimney.
The air of the room, warmed behind the back plate, and by the sides,
front, and top plates, becoming specifically lighter than the other
air in the room, is obliged to rise; but the closure over the
fireplace hindering it from going up the chimney, it is forced out
into the room, rises by the mantle-piece to the cieling, and spreads
all over the top of the room, whence being crouded down gradually by
the stream of newly-warmed air that follows and rises above it, the
whole room becomes in a short time equally warmed.

At the same time the air, warmed under the bottom plate, and in the
air-box, rises and comes out of the holes in the side-plates, very
swiftly, if the door of the room be shut, and joins its current with
the stream before-mentioned, rising from the side, back, and top
plates.

The air that enters the room through the air-box is fresh, though
warm; and, computing the swiftness of its motion with the areas of
the holes, it is found that near ten barrels of fresh air are hourly
introduced by the air-box; and by this means the air in the room is
continually changed, and kept, at the same time, sweet and warm.

It is to be observed, that the entering air will not be warm at first
lighting the fire, but heats gradually as the fire increases.

A square opening for a trap-door should be left in the closing of
the chimney, for the sweeper to go up: the door may be made of slate
or tin, and commonly kept close shut, but so placed as that, turning
up against the back of the chimney when open, it closes the vacancy
behind the false back, and shoots the soot, that falls in sweeping,
out upon the hearth. This trap-door is a very convenient thing.

In rooms where much smoking of tobacco is used, it is also convenient
to have a small hole, about five or six inches square, cut near the
ceiling through into the funnel: this hole must have a shutter, by
which it may be closed

Last Page Next Page

Text Comparison with 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

Page 0
PUBLISHERS' ADVERTISEMENT.
Page 1
up of short words; and the strong sense, clear information, and obvious conviction of the author himself, make most of his moral exhortations perfect models of popular eloquence, and often the finest specimens of a style which has been too little cultivated in his native country.
Page 14
Therefore I took some of the tales in the Spectator, and turned them into verse: and after a time, when I had pretty well forgotten the prose, turned them back again.
Page 16
This habit, I believe, has been of great advantage to me when I have had occasion to inculcate my opinions, and persuade men into measures that I have been from time to time engaged in promoting; and, as the chief ends of conversation are to _inform_ or to be _informed_, to _please_ or to _persuade_, I wish well-meaning and sensible men would not lessen their power of doing good by a positive, assuming manner, that seldom fails to disgust, tends to create opposition, and to defeat most of those purposes for which speech was given to us.
Page 21
In the evening I found myself very feverish, and went to bed; but having read somewhere that cold water drank plentifully was good for a fever, I followed the prescription, and sweat plentifully most of the night: my fever left me, and in the morning crossing the ferry, I proceeded on my journey on foot, having fifty miles to Burlington, where I was told I should find boats that would carry me the rest of the way to Philadelphia.
Page 38
Denham contracted a friendship for me, that continued during his life.
Page 51
Though purblind man Sees but a part o' the chain, the nearest link, His eye not carrying to that equal beam That poises all above--" and which, from the attributes of God, his infinite wisdom, goodness, and power, concluded that nothing could possibly be wrong in the world; and that vice and virtue were empty.
Page 54
Brientnal particularly procured us from the Quakers the printing of forty sheets of their history, the rest being to be done by Keimer; and upon these we worked exceeding hard, for the price was low.
Page 62
Thus I corrected that great _erratum_ as well as I could.
Page 82
| | | | | | | | +------+------+-----+-----+-----+-----+-----+-----+ | Mod.
Page 99
The fines that have been paid by members for absence at the monthly meetings have been applied to the purchase of fire-engines, ladders, fire-hooks, and other useful implements for each company; so that I question whether there is a city in the world better provided with the means of putting a stop to beginning conflagrations; and, in fact, since these institutions, the city has never lost by fire more than one or two houses at a time, and the flames have often been extinguished before the house in which they began has been half consumed.
Page 127
Their demands gave me a great deal of trouble: I acquainted them that the money was ready in the paymaster's hands, but the order for paying it must first be obtained from General Shirley, and that I had applied for it; but he being at a distance, an answer could not soon be received, and they must have patience.
Page 129
I had but little difficulty in raising men, having soon five hundred and sixty under my command.
Page 135
We acted in concert to supply Braddock's army with provisions; and when the shocking news arrived of his defeat, the governor sent in haste for me, to consult with him on measures for preventing the desertion of the back counties.
Page 137
Monsieur Delor, who had an apparatus for experimental philosophy, and lectured in that branch of science, undertook to repeat what he called the _Philadelphia experiments_; and after they were performed before the king and court, all the curious of Paris flocked to see them.
Page 138
This summary was then printed in their transactions: and some members of the society in London, particularly the very ingenious Mr.
Page 144
He caused them to be examined by the proper officer, who, after comparing every article with its voucher, certified them to be right; and his lordship promised to give me an order on the paymaster for the balance due to me.
Page 170
"He was polite in his manners, and never gave a pointed contradiction to the assertions of his friends or his antagonists, but treated every argument with great calmness, and conquered his adversaries rather by the force of reason than assertion.
Page 175
* * * * * "During the number of years I was in business as a stationer, printer, and postmaster, a great many small sums became due to me, for books, advertisements, postage of letters, and other matters, which were not collected, when, in 1757, I was sent by the Assembly to England as their agent, and by subsequent appointments continued there till 1775; when, on my return, I was immediately engaged in the affairs of Congress, and sent to France in 1776, where I remained nine years, not returning till 1785; and the said debts not being demanded in such a length of time, have become in a manner obsolete, yet are nevertheless justly due.
Page 179
The remaining thirty-one thousand pounds I would have continued to be let out on interest, in the manner above directed, for another hundred years; as I hope it will have been found that the institution has had a good effect on the conduct of youth, and been of service to many worthy characters and useful citizens.