316 



Extra Meteorological Observations, 1843. 



ACTINOMETER. 



Makerstoun 



Mean Time 



of 



First Reading. 



il. 



li. m. 



In Sun 



Shade. 



Observation. 



Begun. 



Ended, 



Change 

 in 

 60». 



Sc. div. Sc. div. ! Sc. diT. 



September 8, 1843. 



Effect 



of 

 Sun. 



Mean 



of 

 Group, 



So. div. 



Sun's 

 Alti- 

 tude. 



8 2 



30 42 



32 22 



33 22 



34 52 



35 52 



37 22 



38 22 



2 46 22 



47 57 



48 57 



50 22 



51 22 



31-2 



29-8 



21 



21 



21 



0-7 



Makerstoun 



Mean Time 



of 



First Reading. 



h. 



In Sun Observation. 



or 

 Shade. Begun, Ended, 





21 18 



21 



24 



25 45 



26 45 



28 10 



29 10 



30 30 



31 30 



33 



34 



35 30 



36 30 



38 



39 



19 22 



23 30 



24 30 



26 15 



27 15 



28 40 



29 40 



31 20 



32 20 



21 20 



2-4 



4-4 



Change 

 in 

 60«. 



So. div. Sc. div 



September 21, 1843. 



Effect 



of 

 Sun. 



Mean 



of 

 Group. 



So. div. 



Sun's 

 Alti- 

 tude. 



6 



7 30 



8 30 



10 



11 



12 30 



13 30 



15 



16 



21 21 14 



15 30 



16 30 



18 



19 



20 30 



21 30 



23 



24 



55 



6-5 



137 



19-3 



26-8 



Dry thermometer 76''*2 ; wet thermometer 66°'0 ; Sun clear of cirri, although thin sheets are both above and below it. 

 Cirri approaching the Sun ; breeze. 49"". Thin cirri occasionally on the Sun ; dry thermometer 76°-2 ; wet thermo- 



Sept. 8<» 2^ 35"» 



Sept. 8d 2>» 46'» 

 meter 65'-4. 



.Sept. 21'' 17^ 45". Streak of cirro-stratus to NE. ; sky reddish to E. 59™. Streaks of cirro-strati near the Sun, but under it. IS*" 5™. 

 (.'irro-sti'uti almost touching the lower limb of the Sun ; at 8" the Sun quite clear of the cirro-strati. 18'' 10". Barometer 30-210 in. ; dry 

 thermometer 40^-8 ; wet thermometer 40^-7. IS"" 14*". Misty cirro-strati from NE. to E. IS'' 17'". liecoming hazy near the Sun, and little 

 patches of hazy cirri pass above and below it ; doubtless some of them pass over it, but they must be very small. 18'' 29"". Ilazy-Iooking 

 near the Sun. \H^ ;U". Scud moving from NE. across tlie zenith, and below the Sun. 18^ 39™. Sky covered with thin scud, still the Sun 

 remains pretty free from it. IS'* 40"'. Barometer 30-22o in. ; dry thermometer 42''-(j ; wet thermometer 42*-0. 



Sept. 2n ig** 21"'. Somewhat hazy-looking about the Sun, but no clouds ; streaks of cirrus to E. at SI™. 19'' 34™. Barometer 30*237 in. ; 

 dry thermometer 47^'2 ; wet thermometer 46'"*0. 



Sept. 21'* 20'' 5^. A strip of hazy cirro-stratus on E. horizon. 20^ IS". Barometer 30"248 in. ; dry thermometer 49°-2 ; wet thermo- 

 meter 4S'^-I. 



Sept. 2H 21'' 14". Rather hazy about the Sun. 



