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ERRATA.

I N the Life, p. iii, 1 . 13, dele even. P. 98, 1 . 15, asr. has. P. 121, 1 .

2. dele the. P. 123, 1 . 10, r. the motion ad. P. 126, 1 . 12, r. thatarise. P. J27, 1 . 11, r. ax Dr/. P. 126, 1 . 6, r. judge of. P. 170, 1 .1, r. § 2. P. 177, I. 3, r. velocities. P. 198, 1 . 16, cb r. cd. P. 213,1 . 14. r. egk. P. 219, 1 . 17, dele r's. P. 120, with its, r. with that inits , and 1 . 8 , r. n,. P. 226, dele the comma after distance. P. 317, 1 . 23,about r. above. P. 322, 1 . 4 of the note , for ; n r. in. P. 33-7, 1. 13, r.bomb. P. 354, 1 . 13, her gravity, r. their gravity.