



Hourly Observations of Magnetometers, April 14 — 18, 1845. 





21 



Gotting 



3n 





BiFILAR. 



Balance. 



f». CO 



Gotting 



"h/t m; 



en 





BiFILAK. 



Balance. 



"u • 



Mean Time 



Declina- 











tH '13 



Mean Time 



Declina- 













of Declina- 



tion. 



Cor- 



Thermo- 



Cor- 



Thermo- 





of Declina- 



tion. 



Cor- 



Thermo- 



Cor- 



Thermo- 



rs 



tion Obs. 





rected. 



meter. 



rected. 



meter. 



o 



tion Obs. 





rected. 



meter. 



rected. 



meter. 



O 



d. h. 



m. 



o 



Se. Div. 



" 



Mic.Div. 



o 





<i. h. 



m. 







Sc. Div. 



o 



Mic. Div. 



o 



14 5 



Of 



25 16-87 



541-8 



43-4 



603-5 



44-0 



H 



16 13 







25 11-12 



538-1 



51-5 



537-1 



510 



B 



6 



Of 



11-59 



543-5 



43-6 



619-8 



44-2 



B 



14 







11-10 



536-7 



51-0 



523-2 



50-4 



B 



7 



ot 



00-57 



543-8 



43-7 



633-7 



44-3 



B 



15 







10-18 



535-2 



50-5 



529-7 



49-8 



B 



8 







06-74 



536-7 



43-8 



593-3 



44-2 



B 



16 







0919 



533-3 



50-0 



537-8 



49-3 



B 



9 







11-64 



531-7 



43-6 



570-8 



44-0 



B 



17 







09-44 



533-3 



49-5 



544-2 



48-9 



B 



10 



5 



11-98 



541-0 



43-4 



550-4 



43-7 



B 



18 







08-95 



533-4 



49-0 



549-3 



48-4 



B 



11 







12-36 



530-3 



43-2 



512-1 



43-5 



W 



19 







08-48 



531-4 



48-7 



553-4 



480 



H 



12 



Of 



16-43 



531-1 



43-0 



470-5 



43-4 



W 



20 







07-55 



527-8 



48-3 



558-6 



47-8 



H 



















21 







06-56 



525-6 



48-1 



559-1 



47-6 



W 



13 %0 1 



25 12-55 



535-2 



42-9 



483-5 



43-3 



W 



22 







08-38 



522-6 



48-0 



555-1 



47-6 



H 



14 







09-67 



527-7 



42-8 



499-4 



43-2 



W 



23 







11-41 



521-1 



47-9 



545-8 



47-6 



H 



15 







11-37 



529-9 



42-7 



504-6 



430 



W 



17 







13-69 



522-8 



48-0 



538-6 



48-2 



H 



16 







10-30 



530-3 



42-6 



521-5 



42-9 



W 



1 







14-85 



522-0 



48-2 



535-3 



48-8 



H 



17 







11-54 



533-3 



42-5 



524-6 



42-8 



W 



2 







16-66 



530-3 



48-8 



540-1 



49-7 



H 



18 







1115 



525-7 



42-4 



528-3 



42-7 



W 



3 







15-47 



536-0 



49-8 



540-2 



50-7 



H 



19 







10-75 



533-1 



42-4 



531-6 



42-6 



B 



4 







1401 



537-3 



50-7 



540-8 



51-7 



H 



20 







07-87 



532-0 



42-4 



541-4 



42-7 



B 



5 







13-74 



540-6 



51-6 



541-5 



52-7 



H 



21 







07-29 



527-7 



42-4 



5450 



42-9 



H 



6 







12-16 



542-9 



52-5 



541-3 



53-6 



W 



22 







0919 



524-4 



42-6 



550-9 



43-2 



H 



7 







11-66 



544-2 



53-1 



540-5 



54-2 



H 



23 







11-34 



525-7 



42-9 



530-4 



43-6 



H 



8 







10-70 



5420 



53-7 



546-1 



54-5 



H 



15 







15-01 



521-5 



43-5 



528-8 



44-3 



H 



9 







07-87 



546-2 



53-9 



547-4 



54-6 



H 



1 







15-74 



522-4 



44-1 



520-6 



45-0 



H 



10 







10-14 



540-4 



54-0 



546-4 



54-5 



H 



2 







18-10 



530-2 



44-7 



531-7 



45-5 



H 



11 







09-96 



538-5 



53-9 



543-9 



54-3 



W 



3 







17-94 



526-1 



45-4 



543-7 



46-2 



H 



12 







10-74 



538-5 



53-7 



537-9 



54-1 



W 



4 







14-91 



535-9 



46-2 



555-7 



46-7 



H 



















5 







12-92 



546-3 



46-8 



561-0 



47-2 



H 



13 







25 10-53 



538-4 



53-4 



537-3 



53-8 



W 



6 







11-49 



545-8 



47-2 



560-7 



47-4 



W 



14 







10-54 



537-7 



53-1 



536-5 



53-4 



W 



7 







12-72 



547-4 



47-4 



546-3 



47-5 



W 



15 







10-33 



537-2 



52-9 



536-5 



53-0 



W 



8 







09-67 



543-5 



47-4 



545-9 



47-4 



W 



16 







09-40 



537-3 



526 



537-2 



52-7 



W 



9 







02-99 



549-9 



47-3 



540-2 



47-2 



W 



17 







08-79 



536-4 



52-4 



537-0 



52-4 



W 



10 







07-57 



539-9 



470 



532-9 



46-9 



W 



18 







0808 



535-0 



52-2 



540-0 



52-2 



W 



11 







10-97 



535-4 



46-6 



529-3 



46-5 



H 



19 







06-73 



533-3 



52-0 



540-6 



520 



H 



12 







10-13 



538-9 



46-2 



521-6 



46-1 



H 



20 







0606 



531-8 



51-8 



539-9 



51-7 



H 



















21 







06-53 



529-2 



51-7 



538-3 



51-7 



H 



13 







25 10-98 



539-3 



45-8 



514-6 



45-7 



H 



22 







08-92 



525-4 



51-6 



537-4 



51-7 



H 



14 







10-90 



537-9 



45-4 



512-9 



45-3 



H 



23 







11-07 



523-6 



51-6 



537-5 



51-9 



H 



15 







08-63 



532-6 



45-0 



517-3 



44-9 



H 



18 







15-11 



526-1 



51-8 



531-2 



52-2 



H 



16 







11 07 



525-6 



44-6 



524-4 



44-5 



H 



1 







16-68 



531-1 



52-0 



520-9 



52-5 



H 



17 







10-36 



532-9 



44-2 



525-6 



44-1 



H 



2 







18-07 



538-0 



52-3 



524-2 



52-8 



B 



18 







09-02 



535-1 



43-8 



528-2 



43-7 



H 



3 







19-89 



551-5 



52-7 



529-2 



53-3 



H 



19 







07-72 



533-5 



43-4 



536-2 



43-2 



W 



4 







18-47 



541-1 



53-0 



552-3 



53-7 



H 



20 







07-92 



531-6 



43-0 



541-0 



42-8 



W 



5 







17-96 



536-6 



53-3 



570-0 



54-0 



B 



21 







07-38 



530-4 



42-7 



544- 1 



42-6 



B 



6 







16-33 



553-1 



53-5 



564-6 



54-2 



W 



22 







07-87 



527-0 



42-7 



545-7 



42-8 



W 



7 







13-23 



550-6 



53-7 



579-5 



54-3 



W 



23 







10-48 



523-7 



42-7 



548-0 



43-4 



W 



8 



Of 



08-32 



543-9 



53-6 



593-6 



54-1 



W 



16 







13-91 



525-5 



43-6 



542-9 



44-5 



W 



9 



Of 



03-50 



531-7 



53-5 



574-2 



540 



W 



1 







16-45 



523-3 



44-8 



539-6 



45-7 



H 



10 



Of 



01-59 



533-1 



53-3 



546-6 



53-7 



W 



2 







17-15 



531-8 



46-3 



537-4 



47-1 



W 



11 







08-80 



538-0 



53-0 



550-6 



53-2 



H 



3 







16-23 



535-4 



47-7 



537-3 



48-5 



W 



12 







10-20 



538-3 



52-8 



544-7 



52-7 



H 



4 







15-67 











W 



















5 







15-18 



538-4 



50-7 



537-6 



51-2 



W 



13 



Of 



25 10-16 



539-7 



52-4 



539-1 



52-2 



H 



6 







13-22 



541-6 



520 



549-6 



52-2 



H 



14 



Of 



07-89 



536-2 



520 



477-7 



51-7 



H 



7 







10-67 



544-5 



52-8 



557-7 



52-8 



H 



15 



ot 



00-94 



525-1 



51-7 



482-0 



51-4 



H 



8 







09-29 



543-9 



53-3 



561-2 



53-0 



W 



16 







08-41 



521-3 



51-4 



500-7 



51-0 



H 



9 







09-12 



539-9 



53-2 



557-2 



53-0 



H 



17 







08-05 



536-5 



51-0 



485-3 



50-6 



H 



10 







10-61 



539-9 



52-9 



548-3 



52-7 



H 



18 







05-60 



534-1 



50-7 



507-9 



50-2 



H 



11 







10-53 



538-4 



52-5 



544-4 



52-3 



B 



19 







04-04 



535-0 



50-3 



521-8 



49-7 



W 



12 







10-95 



538-6 



52-0 



540-6 



51-7 



B 



20 







04-48 



5300 



50-0 



526-2 



49-3 



W 









Declination. 



Magnet 



unton 



:hed, April 2^- 



-May 8d. 











BiFILAR. 



Observed 2°' after th 



e Declination, k= 



0'00014C 



. 



Balance. 



Observed 3"» after th 



e Declin 



ition, k= 



0000100 



• 







t Extra Observations 



made. 

























April 16d 9^1". The 



cotton cover of th 



3 bifilar r 



nagnet 



ometer was re; 



jlaced, having been rei 



noved at 



IS"! ISf. 







MAG. AND MET. OBS., 1845. 



