PUBLISHED BY THE SMITHSONIAN INSTITUTION, 



WASHINGTON CITY, 



MAT, 1852. 



ERRATA. 



sj/ji." a d f 1 sin.' ^ d f 



Page 12, line 5tli, for "'"■ °"'P, read 



A' ii- 



Page 16, line 4th, for 4 {am — (a^ — h') sin.' +, read 4 (am — (rt° — JO) «m'-° 'I'- 



