CORRIGENDA. 



p. 3, line 25 from the top, insert positive before number. 



p. 68, Example 2, the path is a rectangular hyperbola. 



p. 69, Example 14 for cos -1 { read {cos&quot; 1 . 



p. 70, Example 17, the path is a conic. 



p. 70, Example 18, for sine read hyperbolic sine. 



p. 71, Example 24, the third component should be w - (uwx + vwy)jr 2 . 



p. 72, Example 36, the range is 2R, not R. 



p. 75, Example 60, for 2hv 2 a read 2hv 2 g. 



p. 76, Example 66, for |?r + read \ir - 6. 



/2 / 2\ / / 1\ 

 p. 79, Example 94, result should be 1 ^- I 1 + - j . / ( 1 - - J years. 



p. 80, Example 105, result should be e*h 2 XPI(lSM 3 ). 



. 82, Example 121, the acceleration contains an additional term varying in 

 versely as the cube of the distance. 



p. 84, Example 138 for 4/c 2 (2a~ 3 - ...) read 4/c 2 (2r- 3 - ...). 

 p. 164, Example 17, result should read 



sin0-wcos0 ) -|/i J(sin30-sm0) -^-2 cos 01 =C. 

 du J d(/ 



p. 164, Example 18, result should read 



p. 165, line 3 from the bottom, for uja, read ^au s . 

 p. 224, Example 155, 



-Jdp read 9 ~= 1 P ldp. 

 a J p 



p. 263, line 9 from the top, 



for {(U-uY-(U -u^} 

 read {(U- U ) 2 -(u-u ) 2 }. 

 p. 289, line 11 from the bottom, for kinectic read kinetic. 



