280 



Extra Meteorological Observations, 1845. 



ACTINOMETER. 







Makerstoun 



Mean Time 



of 



In Sun 

 or 



Observation. 



Change 

 in 



Effect 

 of 



Mean 

 of 



Sun's 

 Alti- 



Makerstoun 



Mean Time 



of 



In Sun 

 or 



Observation. 



Change 

 in 



Effect 

 of 



Mean 

 of 



San'i 

 Alti. 











First Reading. 



Shade. 



Begun 



Ended. 



60^ 



Sun. 



Group. 



tude. 



First Reading. 



Shade. 



Begun. 



Ended. 



60». 



Sun. 



Group. 



tude. 



d. h. m. s. 





Sc. div. 



Sc. div. 



Sc. div. 



Sc. div. 



Sc. div. 



» 



d. h. m. s. 





Sc. div. 



Sc. div. 



Sc. div. 



Sc. div. 



Sc.div. 



1 



April 21, 22. 



April 22 



1" 



21 22 21 



Sun 



16-3 



21-9 



+ 5-6 









22 57 



Sun 



7-3 



12-8 



+ 5-5 









22 30 



Shade 



21-7 



20-9 



-0-8 



6-5 



' 





58 30 



Shade 



11-7 



9-3 



-24 



7-8 



1 





23 30 



Sun 



20-9 



26-7 



+ 5-8 



6-5 







22 1 



Sun 



11-8 



17-2 



+ 5-4 



8-0 







25 



Shade 



26-5 



25-8 



-0-7 



6-5 



6-49 



43-0 



1 30 



Shade 



16-0 



13-2 



-2-8 



8-3 







26 



Sun 



25-8 



31-6 



+ 5-8 



6-5 



3 



Sun 



15-7 



21-2 



+ 5-5 



8-2 



8-19 



44-6 



27 30 



Shade 



31-3 



30-7 



-0-6 



6-4 







4 30 



Shade 



20- 1 



17-5 



-2-6 



8-2 







28 30 



Sun 



30-7 



36-5 



+ 5-8 



6-5 







6 10 



Sun 



20-8 



26-5 



+ 5-7 



8-4 







30 



Shade 



371 



36-3 



-0-8 









7 30 

 9 



Shade 

 Sun 



25-8 

 25-5 



230 

 31-0 



-2-8 

 + 5-5 



8-4 



• 





21 23 26 



Sun 



6-2 



11-9 



+ 5-7 

























27 30 



Shade 



11-6 



10-3 



-1-3 



6-9 



' 





















28 30 



Sun 



10-3 



15-9 



+ 5-6 



6-9 







22 1 25 



Sun 



13-7 



19-5 



+ 5-8 









30 



Shade 



15-4 



141 



-1-3 



6-9 







26 30 



Shade 



18-8 



16-7 



-21 



8 







31 



Sun 



14-1 



19-7 



+ 5-6 



6-9 







28 



Sun 



19-3 



25-4 



+ 6-1 



8-2 







32 30 



Shade 



191 



17-8 



-1-3 



6-8 



6-96 



46-4 



29 30 



Shade 



24-7 



22-7 



-20 



8-1 







33 30 



Sun 



17-8 



23-2 



+ 5-4 



6-9 







31 



Sun 



25-3 



31-5 



+ 6-2 



8-2 



8-21 



43.0 



35 



Shade 



22-8 



21-2 



-1-6 



7-0 







32 30 



Shade 



30-8 



28-8 



-20 



8-4 







36 



Sun 



21-2 



26-7 



+ 5-5 



7-2 







34 



Sun 



31-3 



37-8 



+ 6-5 



8-4 







37 30 



Shade 



26-1 



24-4 



-1-7 



71 







35 30 



Shade 



18-7 



16-9 



-1-8 



8-2 







38 30 



Sun 



24-4 



29-8 



+ 5-4 



7-2 







37 



Sun 



19-7 



261 



+ 6-4 



8-4 







40 



Shade 



29-1 



27-3 



-1-8 



7-2 







38 30 



Shade 



25-4 



23-3 



-2-1 



8-2 







41 



Sun 



27-3 



32-7 



+ 5-4 



7-3 







40 



Sun 



26-0 



31-8 



+ 5-8 



8-2 



8 27 



42'3 



42 30 



Shade 



31-9 



300 



-1-9 



7-2 



7-16 



46-6 



41 30 



Shade 



30-7 



28-0 



-2-7 



8-4 



43 30 



Sun 



30-0 



35-2 



+ 5-2 



71 



43 



Sun 



30-3 



35-8 



+ 5-5 



81 





' 



45 



Shade 



34-3 



32-4 



-1-9 



71 







44 30 



Shade 



34-7 



321 



-2-6 



8-3 







46 



Sun 



32-4 



37-6 



+ 5-2 



71 







46 



Sun 



347 



40-6 



+ 5-9 









47 30 



Shade 



22-0 



20-1 



-1-9 



7-1 























48 30 



Sun 



20- 1 



25-4 



+ 5-3 

























21 23 58 



59 30 



22 30 



2 



Sun 

 Shade 

 Sun 

 Shade 



16-7 

 20-7 

 18-5 

 22-6 



21-5 

 18-5 

 23-5 

 20-3 



+ 4-8 

 -2-2 

 + 50 



-2-3 



71 



7-2 

 7-4 







22 1 55 

 56 30 



58 



59 30 



Sun 

 Shade 

 Sun 

 Shade 



18-3 

 22-3 

 220 

 26-2 



23-6 

 19-4 

 27-3 

 23-4 



+ 5-3 

 -2-9 

 + 5-3 



-2-8 



8-2 

 81 



8-2 



8-26 



40-7 



3 



4 30 



5 30 



7 



8 



Sun 



Shade 



Sun 



Shade 



Sun 



20-3 

 24-8 

 22-9 

 27-4 

 25-5 



25-5 

 22-9 

 28-1 

 25-5 

 30-8 



+ 5-2 

 -1-9 

 + 5-2 

 -1-9 

 + 5-3 



7-3 

 7-1 

 7-1 

 7-2 



7-20 



46-7 



22 2 1 

 2 30 



4 



5 30 



7 



8 30 



Sun 



Shade 



Sun 



Shade 



Sun 



Shade 



25-8 

 29-9 

 28-8 

 32-3 

 31-3 

 35-7 



31 -2 

 26-7 

 339 

 29-1 

 36-9 

 33-0 



+ 5-4 

 -3-2 

 + 5-1 

 -32 

 + 5-6 

 -2-7 



8-4 



8-4 



8-3 ■ 



8-6 



8-5 



8-4 



8-46 



39-9 



22 37 



Sun 



9-6 



151 



+ 5-5 









10 



Sun 



35-6 



41-3 



+ 5-7 



8-5 







38 30 



Shade 



14-2 



12-0 



-2-2 



7-7 ^ 







11 30 



Shade 



40-3 



37-4 



-2-9 



8-5 ^ 







40 



Sun 



14-8 



20-3 



+ 5-5 



7-6 







13 



Sun 



40-1 



45-7 



+ 5-6 



8-7 







41 30 



Shade 



19-7 



17-7 



-20 



7-7 







14 30 



Shade 



44-3 



4M 



-3-2 



8-7 



8-64 



39-2, 



43 



Sun 



201 



26-1 



+ 6-0 



8-1 







16 



Sun 



22- 1 



27-6 



+ 5-5 



8-7 





■1 



44 30 



Shade 



25-3 



231 



-2-2 



8-0 



7-86 



45-7 



17 30 



Shade 



26-3 



231 



-3-2 



8-6 





I 



46 



Sun 



25-8 



31-4 



+ 5-6 



7-9 







19 



Sun 



25-3 



30-6 



+ 5-3 



8-6 ■ 





1 



47 30 



Shade 



30-4 



28-0 



-2-4 



7-8 







20 30 



Shade 



29-2 



25-9 



-3-3 



8-9 





■ 



49 



Sun 



30-6 



35-8 



+ 5-2 



7-8 







22 



Sun 



28-2 



340 



+ 5-8 



8-9 



8-80 



38-4H 



50 30 



Shade 



34-7 



31-9 



-2-8 



8-1 





23 30 



Shade 



32-8 



29-8 



-30 



8-8 





■ 



52 



Sun 1 



341 



39-5 



+ 5-4 







25 



Sun 32-1 1 



37-8 



+ 5-7 



8-8 



1 



-I 



April 21* 22^ 21™. Observations made in front of the Observatory. 29™ 30'. The instrument was exposed 5» too long; the reading 

 has been corrected proportionally. 



April SI"! 23'' 26"». Observations made at west end of Observatory. 47™ 15=. The screw withdrawn. 



April 22'! 2'' 15™ 45'. The screw withdrawn. 2'' 30™. There has been a slight condensation of vapour inside the plate-glass cover for 

 some time, probably caused by the currents of air sweeping over the instrument. 38™ 15=. The screw withdrawn. 



