IV CONTENTS. 



Page 



Determination of the Temperature Coefficients of the Magnets — 



Temperature Coefficient of the Deflection Magnet xlii 



Temperature Coefficient of the Balance Magnet, xliii 



Temperature Coefficient of the Bifilar Magnet, 1 



Inclinometer — 



Description of the Instrument - ' liii 



Facts relating to Observations, Ut 



Meteorological Instruments — 

 Barometer — 



Description of the Instrument, Iv 



Corrections applied to the Observations, Iv 



Thermometers — 



Description and Position of the Dry and Wet Bulb Thermometers, Ivi 



Position of Maximum and Minimum Register Thermometers, Ivii 



Corrections for Thermometers Ivii 



Rain- Gauges — 



Description and Positions of the Rain-Gauges, Iviii 



Anemometer — 



Position and Description of the Anemometer, Iviii 



Mode of Observation, Ix 



State of the Sky — 



Mode of estimating the Surface and Motions of Clouds, Ix 



Clock, Stove, and Computing Room — 



Mean Time Clock, Ix 



Stove and Computing Room, Lx 



Description of the Tables of Observations — 



Description of Tables containing the Daily Observations of Magnetometers, Ixi 



Description of Tables containing the Term-Day Observations of Magnetometers,- •- Ixii 



Description of Tables containing the Extra Observations of Magnetometers, Ixii 



Description of Tables containing the Daily Meteorological Observations, Ixii 



Description of Tables containing the Term-Day and Extra Meteorological Obser- 

 vations, Ixiii 



Reference to Tables of Abstracts, •- Ixiv 



Account of the method adopted in Projecting and Printing the Curves of Term- 

 Day Observations, Ixiv 



General Remarks — 



Reasons for the methods adopted in Reducing and Printing the Magnetical Obser- 

 vations, Lsdv 



Postscript — 



New method of determining the Value of the Scale Divisions of the Bifilar Mag- 

 netometer in Parts of the whole Horizontal Force, bcv 



Results of Experiments in which the new method was employed, Lxvi 



