[ Atta 5] 
“DESCRIPTION of 2 STEAM ENGINE, 
By JOHN COOKE, Ay MRL 
STEAM is univerfally allowed to be the greateft moving Read Feb, 
power we have, and therefore if it were rendered manageable, 
~and adapted to the occafions of art, it might be advantageoufly 
applied where water, wind, men or horfes, are now ufed. 
Water is feldom convenient, wind is a feeble precarious 
agent, and mufcular force is very expenfive, and very limited; 
but fteam is free from each of thefe imperfeétions, and is fupe- 
ior to all in ftrength and duration. 
Ir has been already applied to work the reciprocating or lever 
engine, which is furprizingly effe@ual in pumping water, in 
beating iron, and in other operations which require diftin@ and 
fucceffive impulfes. 
_ Bur to make fteam anfwer the various putpofes of mechanics, 
v3 is neceffary that it fhould be capable of producing a continu- 
; R ous 
72 1789 
