Extra Meteorological Observations, 1845. 



279 



ACTINOMETER. 



In Sun 



or 

 Shade. 



Observation. 



Begun 



Sc. div. 



Ended. 



Sc. diT. 



Change 

 in 

 60=. 



Sc. div. 



Effect 



of 

 Sun. 



Sc. div. 



Mean 



of 

 Group. 



Sc. div. 



Lun s 

 Alti- 

 tude. 





March 2£ 



'. 







Sun 



17-0 



17-9 



+ 0-9 







Shade 



17 



•8 



17-3 



-0-5 



1-3 





Sun 



17 



3 



18-1 



-I-0-8 



1-3 





Shade 



18 







17-6 



-0-4 



1-2 





Sun 



17 



6 



18-4 



+ 0-8 



1-2 



1-24 



Shade 



18 



3 



17-9 



-0-4 



1-2 





Sun 



17 



9 



18-7 



+ 0-8 



1-2 





Shade 



18 



5 



18-0 



-0-5 



1-3 





Sun 



18 







18-8 



+ 0-8 



1-4 





Shade 



18 



7 



18-0 



-0-7 



1-7 





Sun 



18 







19-1 



+ M 



1-7 



1-57 



Shade 



19 







18-4 



-0-6 



1-7 



Sun 



18 



4 



19-4 



+ 1-0 



1-5 





Shade 



19 



3 



18-9 



-0-4 



1-4 





Sun 



18 



9 



19-9 



+ 1-0 







Sun 



17 



9 



20-4 



+ 2-5 







Shade 



20 



5 



20-5 



00 



2-5 





Sun 



20 



5 



231 



+ 2-6 



2-7 





Shade 



23 



2 



231 



-01 



2-7 





Sun 



23 



1 



25-8 



+ 2-7 



2-8 





Shade 



26 







25-9 



-01 



2-8 



2-79 



Sun 



25 



9 



28-5 



+ 2-6 



2-7 





Shade 



28 



6 



28-4 



-0-2 



2-9 





Sun 



28 



4 



31-2 



+ 2-8 



30 





Shade 



31 



2 



310 



-0-2 



3-0 





Sun 



31 







33-8 



+ 2-8 







6-5 



7-6 



18-5 





A 



PRIL 21, 



22. 







Sun 



20-6 



22-7 



+ 2-1 







Shade 



22 



5 



220 



-0-5 



2-6 





Sun 



22 







24-1 



+ 2.1 



2-6 





Shade 



24 







23-4 



-0-6 



2-8 





Sun 



23 



4 



25-7 



+ 2-3 



2-9 





Shade 



25 



5 



24-9 



-0-6 



2-8 



[2-78 



Sun 



24 



9 



27-0 



+ 2-1 



2-7 





Shade 



26 



9 



26-3 



-0-6 



2-8 





Sun 



26 



3 



28-6 



+ 2-3 



2-9 





Shade 



28 



4 



27-8 



-0-6 



2-9 





Sun 



27 



8 



301 



+ 2-3 







Sun 



16 



4 



19-7 



+ 3-3 







Shade 



20 



3 



20-1 



-0-2 



3-4 





Sun 



20 



1 



23-2 



+ 3-1 



3-3 





Shade 



23 



3 



230 



-0-3 



3-5 





Sun 



23 







26-2 



+ 3-2 



3-5 





Shade 



26 



2 



25-9 



-0-3 



3-4 



3-52 



Sun 



25 



9 



290 



+ 3-1 



3-4 





Shade 



29 







28-7 



-0-3 



3-6 





Sun 



28 



7 



32-1 



+ 3-4 



3-7 





Shade 



32 







31-6 



-0-4 



3-9 





14-5 



22-9 



Makerstoun 



Mean Time 



of 



First Reading. 



li. m. 



21 



21 



21 



In Sun 



or 

 Shade. 



Observation. 



Begun. 



Sc. div. 



Ended. 



Sc. div. 



Change 

 in 

 60». 



Sc.div. 



Effect 

 of 



Sun. 



Sc. div. 



Mean 



of 

 Group, 



Sc. div. 



Sun's 

 Alti- 

 tude. 



April 21, 22, 



19 35 



30 



Sun 



37 







Shade 



38 







Sun 



39 



30 



Shade 



40 



30 



Sun 



42 







Shade 



43 







Sun 



44 



30 



Shade 



45 



30 



Sun 



20 23 







Sun 



24 



30 



Shade 



25 



30 



Sun 



27 







Shade 



28 







Sun 



29 



30 



Shade 



30 



30 



Sun 



32 







Shade 



33 







Sun 



34 



30 



Shade 



35 



30 



Sun 



37 







Shade 



38 







Sun 



39 



30 



Shade 



40 



30 



Sun 



42 







Shade 



43 







Sun 



44 



30 



Shade 



45 



30 



Sun 



21 23 







Sun 



24 



30 



Shade 



25 



30 



Sun 



27 







Shade 



28 







Sun 



29 



30 



Shade 



30 



30 



Sun 



32 







Shade 



33 







Sun 



34 



30 



Shade 



35 



30 



Sun 



37 







Shade 



38 







Sun 



39 



30 



Shade 



40 



30 



Sun 



42 







Shade 



43 







Sun 



44 



30 



Shade 



45 



30 



Sun 



31-6 

 16-7 

 16-4 

 20-1 

 19-7 

 23-1 

 22-7 

 26-1 

 25-7 



10- 

 14- 

 14- 

 IS- 

 IS 

 22- 

 22- 

 26- 

 26- 

 31- 

 31- 

 35- 

 35- 

 40- 

 40- 

 44. 

 44. 

 49- 

 49- 



IM 

 15-6 

 14-8 

 18-8 

 17-6 

 21-5 

 20-2 

 23-9 

 22-4 

 260 

 24-4 

 280 

 26-5 

 30-2 

 28-7 

 32-2 

 30-4 

 33-8 

 321 



35-1 



16-4 

 20-1 

 19-7 

 23-2 

 22-7 

 26-2 

 25-7 

 29'3 



■6 



14- 



•1 



14- 



•2 



17- 



•0 



18- 



•1 



22- 



■4 



22- 



•5 



26- 



•5 



26- 



•7 



30- 



•1 



31- 



• 1 



35- 



•7 



35- 



•7 



40- 



•2 



40- 



■ 1 



44. 



•9 



44. 



•8 



49- 



•7 



49- 



•2 



53- 



15-8 

 14-8 

 19-1 

 17-6 

 21-9 

 20-2 

 24-3 

 22-4 

 26-6 

 24-4 

 28-6 

 26-5 

 30-7 

 28-7 

 32-8 

 30-4 

 34-5 

 321 

 363 



-1-3.5 

 -0-3 

 + 3-7 

 -0-4 

 -h3-5 

 -0-4 

 + 3-5 

 -0-4 

 -f 3-6 



+ 3-4 

 -fO-1 

 -1-3-6 

 + 0-1 

 + 3-9 

 + 01 

 + 4-2 

 -1-0-2 

 + 4-2 



00 

 + 4-3 



00 

 -t-4-4 

 -01 

 -F4-6 

 -0-1 

 + 4-7 

 -0-5 

 + 4-6 



+ 4 

 -0 

 + 4 

 -1 

 + 4 

 -1 

 + 4 

 -1 

 + 4 

 -1 

 + 4 

 -1 

 + 4 

 -1 

 + 4 

 -1 

 + 4 

 -1 

 + 4 



3-8 



^ 



3-9 





4-1 





4-0 

 3-9 



3.92 



3-9 





3-9 





3-9 





3.4 





3.5 





3.6 





3.8 





3.9 



[3.84 



4.1 





4.0 





4.1 





4-2 





4.3 





4.3 





4.4 





4-6 

 4.7 



4-65 



4-8 





5.0 





5.1 





5-3 





5-3 





5-5 





5-5 





5-5 



[5.53 



5-5 





5-7 





5.7 





5-8 





5-8 



> 



5-7 





5-7 





5.6 



5.8 



5-77 



5-9 





5-8 





5-9 





24-3 



30-9 



32.2 



380 



[April 21'! ISi" 25™. A slight haze to East, like the remains of a fog ; a very slight fog in the valleys. 



lApril 21<i 191" 23™. Thin haze round the horizon. IQi" 24™. The instrument was exposed to the sun's rays a few seconds too long 



Jding was taken at the proper time. 36™ 40^ The screvr vrithdrawn. 



April 21<i 201' 38™— 46™. A slight breeze. 



April 21 <i 21i> 23™. Actinometer removed to west end of Observatory : puffs of wind. 



the 



