Cooper’s Rotative Piston. 313 
shelter in a more hospitable land, and that the pre-eminence 
which England has so long enjoyed in the manufacture of 
the achromatic telescope should be transferred to a foreign 
country. ‘The loss of Fraunhofer holds out to us an oppor- 
tunity of recovering what we have lost, and we earnestly 
hope that the Royal Society of London and the Board of 
Longitude will not allow it to pass. Great Britain has hith- 
erto left the sciences and the arts to the care of individual 
enterprise, and to the patronage of commercial speculation; 
but now, when all Europe has become our rivals, when eve- 
our patent laws, will be regarded as the Colbert of his age, 
and willsecure to himself a more glorious renown than he 
could ever obtain from the highest achievements in legislation 
or in politics. 
Art. XVIIIl.—Cooper’s Rotative Piston. 
Communicated for this Journal, by the Inventor and Proprietors. 
: REMARKS. 
As we have had good opportunities of seeing, in full ope- 
ration, the engines described in the following papers, and 
ave been much impressed with a conviction of their supe- 
in common use, we publish the following 
account, designedly left imperfect, as regards the construc- 
ar to us not to have overrated their engines. Ata 
future time, after they have secured their invention abroad, as 
well as at home, a more detailed account may be given.— Ed. 
Tuis invention originated with John Milton Cooper* of 
Ftc 
* A young man of a vi lect, and strong inventive p who (liv- 
ing until that time, in the forest,) by a happy thought, hit upon this fine in- 
vention; before he had ever seen or heard the word Aydraulics, or knew that 
there was such a thing as atmospheric or hydrostatic pressure.— Ed, 
Vor. XVI.—No. 2. 13 
