~ 148 _ Hudson and Mohawk Rail Road. 
The Robert Fulton has a much more compact appearance, and 
weighs twelve thousand seven hundred and forty two pounds, of 
which eight thousand seven hundred and forty five pounds, rest on 
one pair of wheels. It was made as we have said, by Robert Ste- 
phenson, the celebrated English Engineer of New Castle upon Tyne. 
"The frame is as long as that of the DeWitt Clinton, and is mounted 
on wooden wheels, strongly bound with iron. There are two eylin- 
ders each of ten inches diameter, and fourteen inches stroke; these 
are in the lower part of the chimney, and are kept warm by the 
smoke and hot air. The pistons are connected with the axis of the 
hind wheels. The fire is made ina cylindrical furnace, h in 
down between them, and the heat passes directly through eight rows of 
' horizontal tubes of the length of the boiler. The steam pipes pass 
through the boiler just above the tubes, and by a simple contrivance, 
the steam ascends to the top of a steam chamber, and there enters & 
funnel-mouthed tube, connected with the steam pipes. Any bad ef 
feets of the surging of the water are of course prevented. The 
safety valve is of the ordinary kind. 
The eduction pipes, are carried partly up the chimney, and pow 
erfully assist the draft. It has been tried and found to succeed ad- 
mirably. Its great weight renders its usefulness somewhat problem 
atical upon a wooden rail. There are yet some accurate experi 
ments to be made on these subjects, and therefore we shall dismiss 
this part of our subject with a quotation from the original description 
of this engine, now before us in the hand writing of Mr. Stephenso 
“ As to the power of this engine, it would take twenty tons withott 
difficulty, but with twelve it will be much better. ‘The small incli- 
nation of one in two hundred and twenty five, will affect the motion 
of the engine very little.” . 
Some experiments will shortly be made in relation to friction and 
velocity on this road, by some gentlemen connected with the Albany 
Institute, in connection with the Engineer, which will probably throw 
some light upon this fruitful subject of calculation. 
The stock of this company has stood deservedly high in the mat" 
ket, and will undoubtedly produce to its’ proprietors, large and si 
creasing dividends. 
