CONTENTS. V 



Page 



Abstracts for the Vertical Force, I45 



Abstracts for Disturbances, 152 



Abstracts for the Magnetic Dip, I54 



Abstracts for the Total Intensity, 156 



ABSTRACTS OF THE RESULTS OF THE METEOROLOGICAL OBSERVA- 

 TIONS— 



Abstracts for the Barometer, -^ 158 



Abstracts for the Thermometers, 161 



Abstracts for the Aqueous Vapour in the Atmosphere, 162 



Abstract for the Force of Wind, 164 



Abstract for the Quantity of Clouds, 164 



Abstract for the Rain Gauges, 165 



ERRATA. 



Introduction, page ix., foot-note, for simultaneous at read simultaneous observations at 



— — X., line 6, for Magnetomers read Magnetometers 



— — XXV., line 5, for cos u + j3 read cos (w + 13) 

 Enter under No. 34, page xxxi. Introduction, the following : — 



The effect of the Declination magnet on the Bifilar magnet is zero ; the effect of the Balance magnet N. pole E. on 

 the Bifilar magnet is — 3-15 Sc. div. This correction has not been applied to the observations. 

 Enter before Table 15, page xxxv. Introduction : — 



The relative moments of the three magnets were determined by placing their centres successively on the same point 



at right angles to a spare magnet suspended in the Declinometer box and observing the deflections ; the following 



are their ratios — 



Declination : Bifilar : Balance = 1-000 : 0-828 : 0-185. 



Introduction, page xxiv., line 16, and page xl., line 27, for K read k 



— — xlvi., last line of Table 22, for 21 read 71 



Sept. 26* 23'' 1841, page 4, Balance Thermometer, for 5-13 read 51-3 

 Aug. 6d 7'> 1842, — 58, for 29-43 read 129-43 



Oct. 29^ 20'' 1841, — 74, transpose the observations under Max. and Min. 

 July 27* 201" 1842, — 93, for 6-68 read 66-8 



— 100, carry foot-note to page 101. 



Introduction, page lii., No. 79, for 24° read 23°. 



