ERRATA IN THIS VOLUME OF OBSERVATIONS FOR 1843. 
Page xxxi., Introduction, for 1-1223 read 1-1233 
— 14, June 22 d 2 h , Balance Magnetometer, for 645-6 read 641-6, and for 65'3 read 64-8 
— 18, Aug. 25 d 22 b , Declinometer, for 22-08 read 22-20 
— 25, Nov. 24 d 18 h , Bifilar Magnetometer, for 521-9 read 522-2 
— 25, Nov. 24 d 20 b , Balance Magnetometer, for 838-2 read 837-4 
— 30, 14 h 0 ra , Bifilar Reading, /or 557-2 read 537-2 
— 41, 9 h 0">, Balance Reading, /or 80-63 read 806-3 
— 44, 19 h 5=>, Bifilar Reading, /or 815-1 read 515-1 
— 44, 18 h 10 m , Declination Reading, for 15-54 read 17-56 
— 46, 14h 30 m , Bifilar Reading, for 217-2 read 517-2 
— 54, Mar. 7 d 7 h 53 m , Balance Reading, for 004-1 read 1004-1 
— 54, Mar. 7 d 8 b 13 m , Balance Reading, for 1976-7 read 976-7 
— 54, Mar. 12 d 7 h 15 m , Balance Minute of Observation, place 15 before 1070-0 
— 67, July 25 d 10 h 23-», Balance Reading, for 826-6 read 626-6 
— 73, first line of figures, 8th column, for Dec. 28 d 2 h read Dec. 28 d 3 h 
— 86, Jan. 4 d , col. Max. and Min., /or 26 5 read 34-0 ? 
— 146, July 21 d .8>>, col. Diff., for 3-1 read 2 9 
— 170, Oct. 8 d 18 b , col. Barometer, for 30-229 read 29-229 
ERRATA IN THE VOLUME OF OBSERVATIONS FOR 1841 AND 1842. 
Page xv., Introduction, 6th line from foot, delete between. 
— xx., lines 8 and 2 from foot, for A read A' 
— xx., last line, after A add = 180° - A' 
— xxxv., last line but one for 2° 30' read 12° 30' 
— 137, Table III., delete 25° below Range. 
