To the R EVER END 
STEPHEN HALES, D.D. 
Fellow of the Royal Society, 
Thefe THREE LECTURES 
O N 
MUSCULAR MOTION, 
Are humbly dedicated, as a fmall Acknow- 
ledgment for the many and great Advan- 
tages received from his moft curious, 
learned, and indefatigable Refearches into 
Nature ; and for the many perfonal and 
particular Favours which he has been 
pleafed to confer on 
His Moft Obedient , and 
Moft Humble Servant^ 
Browne Langrish, 
