24 Mr Henry cn the Confiftency of 
fupport. How tedious, how expenfive, and how 
imperfect would many operations be found, if 
performed by the mere efforts of human drength, 
or manual fkill, unaffided by mechanical aid ! 
The mechanic powers facilitate their perform¬ 
ance, and render their products more complete. 
How much do we owe to them for the improve¬ 
ment and extenfion of the manufactures of this 
town ! I am addreffing a fociety, all of whom 
are daily eye-witneffes of the beneficial confe- 
quences which have arifen from thefe improve¬ 
ments ; Jome of whom are reaping the fruits of 
them. It would be fuperfluous, it would be 
impertinent to enlarge on the fubjeCt: for it 
mud be evident, that as Mechanics are fo effen- 
tially neceffary to manufactures, a knowledge 
of their principles muft be ufeful to every man 
engaged in fuch branches of trade. 
With Mechanics, Hydrodatics and Hydraulics 
are fo clofely connected, that a knowledge of 
them may be confidered as a neceffary adjunCt. 
Tor, on the principles of thefe fciences often 
depends the fird movement of the mod complete 
machines j and fire and water engines, mills, 
aqueduCts, pumps, and other mechanical druc- 
tures, can only be brought into aCtion by their 
abidance. 
Nor is the utility of Chemidry more confined, 
or lefs connected with manufactures, than Me¬ 
chanics, 
