Saath ol eee 
CONTENTS. 
General Form and Turning Points of the Diurnal Motions,-+++-++++++++++++** 
Angular Distances between the Disturbed and Undisturbed Hourly Mean 
PORTIONS Me eetatensrn nea santcencar~cesausaznencnacesosentncesn ccs ( 24ST oct sage 
Motions with reference to the Moon’s Hour-Angle, «+-++-++r-+-ssrsrre-rerr 
Avrora BoREALIS— 
List of Aurore Boreales seen at Makerstoun in the years 1843-9,.---------- 
Additional Notes on Aurora Borealis seen im 184.7 —Q,-sceeeceeeeeee eee eee ere ees 
Diurnal Variations of Visible Frequency of the Aurora Borealis, --++++++++++ 
Annual Variation of Frequency of the Aurora Borealis, ---++++++rsrrereseeet 
Foot-note on Results of Mairan, Kimtz, and Hansteen,---+++-++#e+ssereesrte 
Annual Variation from Aurore Observed near Midnight, 
Variation of Frequency of the Aurora Borealis with the Moon’s Age,----- 
Foot-note on the Preferability of Mean Latitudes for the Determination 
of the Laws of Frequency of the Aurora Borealis, ---+++:+se+essrrsrseeees 
Note on the Theory of the Aurora Borealis,::::-+:ssssessssrescnseterersesennen es 
MerrorotocicaL ResuLts— 
Temperature of the Air— 
Mean Temperature at Makerstoun, with Probable FError,yssecseseeeeeesrersee ees 
Arnual Varlation,.----c0r+-.22-s-cecccaccresnssensorenernaserents tae sc tenses 
Probable Error of the Mean Temperature for any Month,--++-+ssererers seers 
Annual Variation of the Diurnal Range of Temperature, and the Ranges 
of the Mean Diurnal Variations,------+----+-+---sceerssssseecreeeneteteee cess 
Differences of the Daily Mean Temperature from the Monthly Mean,------- 
Diurnal Variation of Temperature,--..-++1+-ssererrsrecerereceseestnstt sete 
Pressure of Aqueous Vapowr— 
Arnal Variationy--<-:2202220scceeeretenceeetenesercerensesnnnrec nsec cece oe eee OS 
Variations with Reference to the Moon’s Age and Declination,-+++++++++++++ 
Diurnal Variation,-:-.---..:ssecssesecesecessesnnccentseeetteresenr een cesses” 
Relative Humidity— 
Arnnual Variation,-<-+---20scecsssssecesntrcencnencecencesnnsnecseceneesznccceceeesse ees 
Variations with Reference to the Moon’s Age and Declination,-----++++++++-- 
Diurnal Variation,»..-.s.--scssesesrseceeeestenseserenserctcerseseeeseees eee eee" 
Atmospheric Pressure— 
Mean Atmospheric Pressure at Makerstoun,------++++++++ssrsrrsrsrrssreseeeeee 
Annnal Variation, and Probable Error for each Month, 
Foot-note on the Differences of Mean Pressure at Greenwich and Maker- 
StOUMy.ciesewstensmenmrannsocc-erocetssssesarsocstcsr oO tescbs cease aaah ea a hi 
Quarters giving greatest Range of Mean PessUTe,s++sessesersreee nesses tess eses 
Annual Variation of Differences of the Daily Mean from the Monthly 
Mean Pressures,:++++++-+++-seeseesssssnsrsersnsanacensaaancssensssenseeesss ses scenes 
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