252 



MEMOIRS NATIONAL ACADEMY OF SCIENCES, VOL. X, NO. 7. 



PERIODIC TERMS. 



Tables of (115) Thyra^- Continued. 



TABLE IV — u cos i. 



Unit or a and 6=09001. 



[ndz, S log r, and u/cos i are to be computed in the form Ii at sin ig + S, 6i cos ig+cT.\ 



