440 Errata. 



Page 274, line 1 insert a single bracket at the end of the line. 

 374 18 for ' 282' read 482. 



_ 381 - 13 < = 



P P 



_ 15 < BP> refl rf ^ and for JL- read 



I~T~ 



V ^p _j_ g 



391 20 for l a ' read 6. 



393 , 5 ^tfreadv*. 



399 bottom line, ' EH DK* read DH DK. 



400 2 for c EH read DH. 



" 21 c sin a?' read sin a: 2 , and make the same 



change in the succeeding parts of the so- 

 lution. 



bottom line, extend the radical sign over . 



419 22 for c ZRI" read ZR'I. 



420 37 after* ' purpose' insert of. 



427 20 for 6 1,44096' read 1,375. 



20 ' 1,66560' read 1,600. 



23 ' 144 to 166' read 1375 to 1600. 



