CORRIGENDA IN THIS VOLUME OF OBSERVATIONS FOR 1845 anp 1846. 
Introduction, page xx., lines 9 and 10, substitute P for p and Q for g P 
— xxi, line 5 from foot, for termination. read termination, 
— xxi. line 3 from foot, for seconds, read seconds : 
— xxii., line 6, make the correction given below for 1844, Introd., p. xxii., line 11 
— xxvii., line 4 from foot, and p. xxviii., lines 2, 7, and 16, substitute P for p and Q for q 
—  xli, heading of page, for Bifilar or Horizontal read Balance or Vertical 
Page 25, 94 14, column “ Balance Corrected,” for 416°3 read 516°3 
— 39, 244 184, column “ Bifilar Corrected,” for 552'8 read 12:8 
— 51, 244 10%, column “ Balance Corrected,” for 457-8 read 437-8 
— 58, 54 84, column “ Balance Corrected,” for 478-6 read 578'6 
— 59, 114 22h, column “ Declination,” for 18°93 read 08:93 
— 148, 14 235, column “ Gott. M. I.” for 14 235 read 14 233 
— 182, line 6 from foot, column “ Gétt. M. T.,” for 54 0 read 64 0» 
— 312, line 1, 2d column, “ Gétt. Mean Time,” for 24 2% 0™ read 5» 2h Om 
— B12, 5 x “ Balance Corrected,” for 387-7 read 479°7 
— 316, 222 10%, column “ Balance Corrected,” for 372°1 read 266°1 
— 320, 264 10%, column “ Balance Corrected,” for 131-0 read 231-0 
— 322, 234 10%, column “ Balance Corrected,” for 272:1 read 143:3 
CORRIGENDA IN THE VOLUME OF OBSERVATIONS FOR 1844. 
Introduction, page xiv., line 13, for # n read (1+#)2 
— xx., lines 9, 10, and 13, substitute P for p and Q for q 
— xxii., line 11, for {1+ (b)—b,) — 9 (to—G) } read {1—k (by—b)) +9 (—-t,)}! 
(This accidental error does not extend to the reductions which were performed by 
the latter form.) 
— xxix, lines 10, 15, 20, and 29, substitute P for p and Q for g 
— xli., heading of page, for Bifilar or Horizontal read Balance or Vertical 
Page 202, 204 10%, column “ Wind. Force in 10™,” for 6:0 read 0:0 
— 235, 18¢ 22>, column “ Wind, Force in 10™,” for 2:2 read 0°2 
CORRIGENDUM IN THE VOLUME FOR 1843. 
Introduction, page xlii., line 21, for X tan (u—3) read C X tan (u—3); C being a constant 
