iv CONTENTS. 
Pace 
Determination of the Temperature Coefficients of the Magnets— 
Temperature Coefficient of the Deflection Magnet..---+--++--++++++ss++rseereereeeees xlii 
Temperature Coefficient of the Balance Magnet, ---- xliii 
Temperature Coefficient of the Bifilar Magnet, ---+-++++:s0ssesesseeeer ees neeeneeeeees 1 
Inclinometer— 
Description of the Instrument «----.--+cseeeeceeeeecer ene ceeceecnnrereneenencsewedersecees lili 
Facts relating to Observations,::+--+ssrserscreeeeeeeee cece eee aee ener eens ene neeenenen ene liv 
Mereorotoaicat InstRUMENTS— 
Barometer— 
Description of the Instrument, sence mee nee eee tenner eee eee een eases eee eeeneeses senses eesees lv ; 
Corrections applied to the Observations, Peco cok sc clink scti ce bucly se net uence smwaaae ccna lv 
Thermometers— 
Description and Position of the Dry and Wet Bulb Thermometers, -------..---- lvi . 
Position of Maximum and Minimum Register Thermometers,---+++--+-++++-++++++ lvii . 
Corrections for Thermometers «++ +++esseeersreer ees eeeeesneeenennennrenscuseasaesneanaeces lvii 
Rain-Gauges— | 
Description and Positions of the Rain-Gauges, sce cccccstoccecucctcesevceverareresceve lvili { 
Anemometer— . 
Position and Description of the Anemometer, «-+-++++++++1++0++eessecteeeseererenaes iii ; 
Mode of Observation, lx | 
1 
STATE OF THE SkY— | 
Mode of estimating the Surface and Motions of Clouds, -----+-+-+-+++++++++sesee+eee000 lx 
Crock, Stove, anp Computine Room— 
Mean Time Clock, lx 
Stove and Computing Room, -------:+++++s:cesescseesseeeesenesseeeenecenseeenseeecseensesens Ix 
DescrIPTION OF THE TABLES OF OBSERVATIONS— | 
Description of Tables containing the Daily Observations of Magnetometers,.-------- lxi 
Description of Tables containing the Term-Day Observations of Magnetometers,.--- lxii 
Description of Tables containing the Extra Observations of Magnetometers, ------- Ixii | 
Description of Tables containing the Daily Meteorological Observations, -----.------ Lxii 
Description of Tables containing the Term-Day and Extra Meteorological Obser- . 
VAtIONS, sceeeeeeeeeeceeveeeceeenree eee cceeeeesrecsetaeeee ses esteeeaeeescetererteceeteeeteeene lxili 
Reference to Tables of Abstracts, ----- Sesneemtenniienh|aeeletdam sine: scicie malsianices sita(taeicis elcid lxiv 
Account of the method adopted in Projecting and Printing the Curves of Term- 
Day Observations, mobcivcedencnticsecucises cats cc sesive Cane cdd eral se sameavian See eanisaae sc cancun lxiv 
GENERAL REMARKS— 
Reasons for the methods adopted in Reducing and Printing the Magnetical Obser- 
VALIONS, -+reeeceeeeccencsec seen eeneeneenneenaeeeeeeteseaesseeeceseeseassseeeaeensnsengaeeaees lxiv 
PostscripT— 
New method of determining the Value of the Scale Divisions of the Bifilar Mag- : 
netometer in Parts of the whole Horizontal Force, -++++++++.+seeerenseseesseese ees lxv 
Results of Experiments in which the new method was employed, -:-+++++++++-++++++++ lxvi 
