X P2 yn—i 



^' 397) ^' ^^3 for !/;:«, read. 



rn — 1 



711 1 



y Z U. p. 401, 1. 10, from the bottom, for, v—, read 

 y __, p, ^02, 1. 2, from the bottom, for A r, read 

 A r. P. 404, 1. 8, for 1 = time, read t =: time. 



,. ,.3, .. .., ... _j_ .„ "-'-^ , 



K V W 1 W 1 



xyy 



---^- "rL- and . 1. from 



V 



i;2 4. — y — /** 



, the bottom, for +_ ^ '"— ' 



y: 



V 1 — 7tt 1 — tn 



read + 



^/ X yy 



V 1 — in 



ym r 



P. 4085 1.4, from bottom, for "TUT", m— 1, read ^ ^ . rq—ii 



£?+» ^''+* £?+> ^^"+1 



P. 409. 1. 4, for — — = — read -——=i~^ ' 

 yV r r^ r 



P. 410, 1. 4 from the bottom, for r y, read ry'. P. 412, 

 1. II, from bottom, for n =z, read r = . P. 415, 1. 11, 



b V 

 for " to " read "or. " P. 416, 1. 6, for r x ' a yz 



bV 

 read r x r ., 3 • P. 418, 1. 6 from the bottom, for " the 



centre of force, or fuch parts ;" read, " the centre of force, 



being defcribed by a centrifugal force, or fuch parts." P. 



419, 1. 12, from bottom, for — vi Ax"~^') read — 



mAx'"~^. P. 420, 1. 3, from bottom, for m" , read ?«'" • 



P. 420, 1. 15, for " pofitive," read " poflible." P. 429, 1. 9. 



fw " acdute," read " acute." P. 499, 1. 2, for " another," 



read «' an eartlicn." P- 640. 1. i^. for '* fo at," read " to 



as at," 



