348 Account of Mr Samuel Morey’s 
has been submitted to the Admiralty, and we hope that it will 
be soon ordered to be put in practice, at least in some one in- 
stance, as a test of its accuracy. The whole expence of the ap- 
paratus will not amount to twenty shillings. 
Art. Account of the Revolving Steam Engine^ in- 
vented hy Mr Samuel Morey 
The high degree of importance which is now attached in 
every part of Europe to the perfection of the new system of 
navigation by means of steam, gives a great value to any im- 
provement upon the steam-engine, by which it may be render- 
ed more applicable to this useful art. The extensive employ- 
ment of the steam-boat in navigating the rivers and lakes of the 
United States, has directed the ingenuity of American en- 
gineers, and the enterprize of American capitalists, to the im- 
provement of every part of the machinery by which the pro- 
gress of the vessel can be accelerated, and the security of the 
passengers insured ; and we do not think that we are dero- 
gating in the least from the well known mechanical genius of 
our own countrymen, when we say, that the steam-boat, though 
decidedly a British invention, owes its general introduction, and 
many of its best improvements, to the Americans. 
In presenting our readers with a brief description of Mr 
Morey’s revolving steam-engine, we do not mean to recommend 
it as holding out any very great prospects of advantage, be- 
cause it has not yet been compared with those of the common 
form ; but as it has been actually constructed, and as it not on- 
ly displays much ingenuity, but exhibits the engine in a new 
form, we are persuaded that our engineers will be gratified with an 
account of it, and may derive some hints, which may be useful 
in their attempts to give it a still higher degree of perfection. 
This engine, as applied in a double form to the steam-boat, 
is represented in Plate VII. Fig. 3., where A B C is a section 
* The following paper is drawn up from a very full account of this engine 
given in Silliman’s American Journal of Science, No, 2, p. 157, by Mr John L. 
Sullivan. — Ed. 
2 
