are of wrought iron, about a third of an inch
thick, with a button at bottom, and a screw and nut at top, and may
be ornamented with two small brasses screwed on above the nuts.
To put this machine to work,
1. A false back of four inch (or, in shallow small chimneys, two
inch) brick work is to be made in the chimney, four inches or more
from the true back; from the top of this false back a closing is to
be made over to the breast of the chimney, that no air may pass into
the chimney, but what goes under the false back, and up behind it.
2. Some bricks of the hearth are to be taken up, to form a hollow
under the bottom plate; across which hollow runs a thin tight
partition, to keep apart the air entering the hollow and the smoke;
and is therefore placed between the air-hole and smoke-holes.
3. A passage is made, communicating with the outward air, to
introduce that air into the fore part of the hollow under the bottom
plate, whence it may rise through the air-hole into the air-box.
4. A passage is made from the back part of the hollow, communicating
with the flue behind the false back: through this passage the smoke
is to pass.
The fire-place is to be erected upon these hollows, by putting all
the plates in their places, and screwing them together.
Its operation may be conceived by observing the plate entitled,
Profile of the Chimney and Fire-Place.
_M_ The mantle-piece, or breast of the chimney.
_C_ The funnel.
_B_ The false back and closing.
_E_ True back of the chimney.
_T_ Top of the fire-place.
_F_ The front of it.
_A_ The place where the fire is made.
_D_ The air-box.
_K_ The hole in the side-plate, through which the warmed air is
discharged out of the air-box into the room.
_H_ The hollow filled with fresh air, entering at the passage _I_,
and ascending into the air-box through the air-hole in the bottom
_G_ The partition in the hollow to keep the air and smoke apart.
_P_ The passage under the false back and part of the hearth for the
The arrows show the course of the smoke.
_Plate VIII*._ _Vol. II. page 238._
_PROFILE OF THE PENSYLVANIA CHIMNEY & FIRE-PLACE._
_Front View Side View_
_Published as the Act directs, April 1, 1806, by Longman, Hurst, Rees
& Orme, Paternoster Row._]
The fire being made at A, the flame and smoke will ascend and strike
the top T, which will thereby receive
He never loses sight of common sense in any of his speculations.Page 3
Asaph's, 1771.Page 13
There was another bookish lad in the town, John Collins by name, with whom I was intimately acquainted.Page 30
" As I seemed at first not to think so ill of them as she did, she mentioned some things she had observed and heard that had escaped my notice, but now convinced me she was right.Page 31
So he swore he would make me row, or throw me overboard; and coming along, stepping on the thwarts towards me, when he came up and struck at me, I clapped my hand under his thighs, and rising, pitched him head foremost into the river.Page 42
This was a more comfortable as well as a cheaper breakfast, and kept their heads clearer.Page 61
But I suspected the motive, resented it, and went no more.Page 65
There is also children of brother John and sister Morris, but I hear no thing from them, and they write not to me, so that I know not where to find them.Page 116
Many objections and difficulties were started, but at length they were all overcome, and the plan was unanimously agreed to, and copies ordered to be transmitted to the board of trade and to the assemblies of the several provinces.Page 119
The assemblies for three years held out against this injustice, though constrained to bend at last.Page 131
This gave me occasion to observe, that when men are employed they are best contented, for on the days they worked they were good-natured and cheerful, and with the consciousness of having done a good day's work they spent the evening jollily; but on our idle days they were mutinous and quarrelsome, finding fault with the pork, the bread, &c.Page 133
I forget how many companies we had, but we paraded about twelve hundred well-looking men, with a company of artillery, who had been furnished with six brass field-pieces, which they had become so expert in the use of as to fire twelve times in a minute.Page 147
 I set out immediately, with my son, for London, and we only stopped a little by the way to view Stonehenge, on Salisbury Plain; and Lord Pembroke's house and gardens, with the very curious antiquities at Wilton.Page 160
At the election for a new Assembly, in the fall of 1764, the friends of the proprietaries made great exertions to exclude those of the adverse party; and they obtained a small majority in the city of Philadelphia.Page 175
Company of Philadelphia I give to my grandson Benjamin Franklin Bache, confiding that he will permit his brothers and sisters to share in the use of it.Page 184
quality? _A.Page 190
_ If an excise was laid by Parliament, which they might likewise avoid paying by not consuming the articles excised, would they then not object to it? _A.Page 196
* * * _Q.Page 219
The introduction is a model of vivid style and sound wisdom.