Extra Meteorological Observations, 1843. 



315 



ACTINOMETER. 



In Sun 



or 

 Shade. 



Observation. 



Begun 



Sc. div. 



Ended. 



Change 

 in 

 60*. 



Sc. div. 



Effect 



of 



Sun. 



Sc. div. 



Mean Sun's 



of Alti- 



Group. tude. 



Sc. div. 



September 5, 



1843. 







Shade 



33-5 



330 



-0-5 







Sun 



330 



38-7 



+ 5-7 



5-7 





Shade 



38-7 



39-2 



+ 0-5 



5-7 





Sun 



39-2 



46-0 



+ 6-8 



6-7 



6-40 



Shade 



460 



45-7 



-0-3 



68 



Sun 



45-7 



520 



+ 6-3 



6-5 





Shade 



520 



520 



0-0 



70 





Sun 



520 



59-6 



+ 7-6 







Shade 



30-9 



30-6 



-0-3 







Sun 



30-6 



37-2 



+ 6-6 



6-8 





Shade 



37-2 



370 



-0-2 



70 



7-05 



Sun 



370 



440 



+ 7-0 



71 



Shade 



44-0 



44-0 



00 



7-3 





Sun 



440 



51-5 



+ 7-5 







39-6 



371 



September 6, 7, 1843. 



Shade 



30-9 



32-9 



+ 2-0 







Sun 



32-9 



40-0 



+ 7-1 



5-2 



i 



Shade 



400 



41-9 



+ 1-9 



5-2 





Sun 



41-9 



49- 1 



+ 7-2 



5-6 



5-65 



Shade 



49-1 



50-4 



+ 1-3 



60 



Sun 



50-4 



57-8 



+ 7-4 



6-1 





Shade 



57 8 



59-2 



+ 1-4 



5-8 



J 



Sun 



59-2 



66-3 



+ 7-1 







Sun 



26-7 



33-5 



+ 6-8 







Shade 



34-9 



340 



-0-9 



7-6 





Sun 



340 



40-7 



+ 6-7 



7-5 





Shade 



44-7 



44-1 



-0-6 



71 



7-22 



Sun 



44-0 



50-3 



+ 6-3 



6-9 





Shade 



50-7 



50-0 



-0-7 



7-0 



1 



Sun 



49-9 



56-1 



+ 6-2 







40-5 



40-4 





September 7, 



1843. 







58 22 



Sun 



26-3 



35-2 



+ 8-9 







59 52 



Shade 



370 



40-0 



+ 3-0 



5-4 



1 



1 22 



Sun 



41-0 



49-0 



+ 80 



5-6 



5-60 



i 3 22 



Shade 



51-9 



53-8 



+ 1-9 



5-8 



1 



■ 4 22 



Sun 



53-8 



61-2 



+ 7-4 







8 22 



Sun 



24-9 



330 



+ 8-1 







1 9 52 



Shade 



34-1 



35-6 



+ 1-5 



6-3 



6-30 



11 22 



Sun 



361 



43-6 



+ 7-5 



6-3 



|l2 52 



Shade 



44-2 



45- 1 



+ 0-9 



6-3 



14 22 



Sun 



45-3 



52-2 



+ 6-9 







390 



39-4 



Makerstoun 



Mean Time 



of 



First Reading. 



1). m. 



7 23 



8 



8 



39 



41 



42 



43 



45 



47 



48 



49 



51 







1 



3 



4 



6 



7 



9 



10 



12 



38 

 39 

 41 

 42 

 44 

 45 

 47 

 48 

 50 

 5 

 6 

 8 

 9 

 11 

 12 

 14 

 15 

 17 

 35 

 36 

 38 

 40 

 41 

 42 

 44 

 45 

 47 



In Sun 

 or 



Shade. 



Observation. 



Begun 



Sc. div. Sc. div. 



Ended. 



Change 

 in 

 60 s . 



Sc. div. 



Effect 



of 

 Sun. 



Sc. div. 



Mean 



of 

 Group, 



Sc. div. 



Sun's 

 Alti- 

 tude. 





September 7, 8, 1843. 







22 



Sun 



26-7 



33-0 



+ 6-3 







22 



Shade 



33-2 



32-9 



-0-3 



6-4 





22 



Sun 



32-9 



38-9 



+ 6-0 



6-3 





52 



Shade 



39-0 



38-8 



-0-2 



6-3 





22 



Sun 



38-5 



44-7 



+ 6-2 



6-6 



6-51 



12 



Shade 



44-7 



44-0 



-0-7 



6-8 





22 



Sun 



44-0 



49-9 



+ 5-9 



6-6 





52 



Shade 



50-0 



49-3 



-07 



6-6 





22 



Sun 



49-1 



55-0 



+ 5-9 







22 



Sun 



27-8 



33-3 



+ 5-5 







52 



Shade 



330 



31-8 



-1-2 



6-5 





22 



Sun 



30-9 



361 



+ 5-2 



67 





52 



Shade 



357 



33-9 



-1-8 



6-8 





22 



Sun 



32-9 



37-7 



+ 4-8 



6-7 



[671 



52 



Shade 



370 



35-1 



-1-9 



6-8 





22 



Sun 



34-2 



39-2 



+ 5-0 



6-7 





52 



Shade 



38-9 



37-3 



-1-6 



6-8 





22 



Sun 



367 



42-0 



+ 5-3 







22 



Sun 



17-2 



23-9 



+ 6-7 







52 



Shade 



23-9 



23-8 



-0-1 



6-6 





22 



Sun 



23-4 



29-7 



+ 6-3 



67 





52 



Shade 



29-8 



29-1 



-07 



7-0 





22 



Sun 



28-8 



35-1 



+ 6-3 



6-8 



671 



52 



Shade 



35-1 



34-8 



-0-3 



6-6 





22 



Sun 



34-4 



40-8 



+ 6-4 



6-7 





52 



Shade 



41-0 



40-7 



-0-3 



6-6 





22 



Sun 



40-2 



46-4 



+ 6-2 







22 



Sun 



39-8 



45-3 



+ 5-5 







52 



Shade 



45-1 



440 



-11 



6-8 



\ 



22 



Sun 



43-2 



490 



+ 5-8 



6-9 





52 



Shade 



48-9 



47-8 



-11 



6-9 





22 



Sun 



472 



530 



+ 5-8 



6-9 



6-89 



52 



Shade 



52-9 



51-9 



-1-0 



6-9 





22 



Sun 



5-1-3 



57-3 



+ 6-0 



6-9 





52 



Shade 



572 



56-3 



-0-9 



6-9 





22 



Sun 



55-9 



62-0 



+ 6-1 







22 



Sun 



50-2 



56-5 



+ 6-3 







52 



Shade 



56-3 



55-3 



-1-0 



70 





22 



Sun 



54-8 



60-6 



+ 5-8 



6-9 





7 



Shade 



60-2 



59-0 



-1-2 



71 





22 



Sun 



58-8 



64-8 



+ 6-0 



7-2 



17-01 



52 



Shade 



64-3 



63-1 



-1-2 



7-0 





22 



Sun 



62-3 



68-0 



+ 57 



70 





52 



Shade 



67-1 



657 



-1-4 



6-9 



' 



22 



Sun 



64-9 



70- 1 



+ 5-2 







40-2 



40-2 



39-4 



381 



36- 1 



5d ih gm. D r y thermometer 65°-4 ; wet thermometer 58°9 ; cirro-strati gathering to NW. 



5d ih 40m. Dry thermometer 66°2 ; wet thermometer 57°-2 ; cirro-cumuli in strata covering the sky, and near the Sun. 48">. Cirro- 

 on the Sun, and in zenith. In all the shade observations the screen was placed near the instrument, but changed every observation. 



6 d 23 h 30-. Sky clear near the Sun ; a few mottled cirri near the Sun ; wind blowing 0-3 lb. from SW. In the shade observa- 

 e^ screen was placed at a distance of 18 inches from the instrument. 23>> 35 m . Dry thermometer 66°-8 ; wet thermometer 57°-6. 



7d ob 20™. Dry thermometer 67°-7 ; wet thermometer 58°-0. b 22- 50 s . At this Sun observation the instrument was exposed 

 tead of 60 s ; the reading at 23 m 50 s has been obtained by taking f of the rise in 90 s . [light breeze. 



7d 23 h 2'". Dry thermometer 71°-1 ; wet thermometer G2°8 ; a few patches of mottled cirri and cirro-strati, but not near the Sun ■ 



7d 23 h 12™. Sky as before ; brownish haze on horizon ; breeze ; dry thermometer 72°-5 ; wet thermometer 63°-5. 



8 d h 6 m . Dry thermometer 73°-0 ; wet thermometer 64°-3. Breeze at h 2°> ; calm at 10™. 



8d c 45°>. Dry thermometer 73°-8 ; wet thermometer 65°-l ; curled cirri coming up from NW. 



8 4 l h 12 m . Dry thermometer 75°-3 ; wet thermometer 65°-5. 



8 d l h 35">. Strips of cirri approaching the Sun. 41">. Dry thermometer 76°-0 ; wet thermometer 66°-l. 48 m . Reticulated cirri 

 ppr<(ching the Sun very nearly ; some of the finer filaments have perhaps already reached it. 



