Notice of the Steam-Boat Babcock. 117 
engine, upon which they would be predicated, were most 
wretchedly constructed, and cannot be considered as a fair 
test of their power. Poor, however, as they were, the gain 
will be evidently seen in the following statement. They 
were placed in a boat of eighty tons measurement, and that 
drew four feet and a half of water. The diameter of the cyl- 
space occupied by the furnace was about seven feet in length, 
and four in width and height. Se 
The whole of the machinery was very poorly constructed, 
and the boat was much too heavily timbered for her size, yet 
she performed an average passage, between this place and 
Providence, in three hours and a half. "The distance is called 
thirty miles; the quantity of wood burnt varied from two to 
three feet, and the whole quantity of water on board never ex- 
ceeded a barrel, nor was even the whole of that necessary, as 
it was saved by a condenser. 
During the last summer, she made a trip to New-York in 
twenty-five hours, a distance of one hundred and seventy 
miles; the quantity of wood then consumed, was, by actual 
measurement, one cord and three quarters. Now had a 
high pressure boiler been attached to the engine, instead of 
the generators, it would have occupied at least nineteen feet 
in length; the weight of the mass of brick work e ing it, 
together with the weight of the boiler, with the water contain- 
ed in it, would make the space and weight at least four times 
that of the generators, and the quantity of wood used in a trip 
to Providence, of three hours and a half, instead of three 
feet, would have been at least sixteen feet ; the saving of fuel 
and the advantages in space and weight, are therefore appa- 
rent. é 
The subjoined sketch is taken from one that was draught- 
ed for a boat now building to ply upon the Hudson, and will 
be much more perfect in its construction, than the one now de- 
scribed. It was not thought necessary to show any thing more 
