Extra Observations of Magnetometers, April 17, 1844. 



123 



BlFILAR 

 Corrected. 



Balance 

 Corrected. 



Gbtt. 

 Mean 

 Time. 



Declination. 



BlFILAR 



Corrected. 



Balance 

 Corrected. 



Gbtt. 

 Mean 

 Time. 



Declination. 



BlFILAR 



Corrected. 



Balance 

 Corrected. 



Min. 



Sc. Div. 



Min. 



Mic. Div. 



d. h. 



Min. 



o 



Min. 



Sc. Div. 



Min. 



Mic. Div. 



d. h. 



Min. 



o 



Min. 



Sc. Div. 



Min. 



Mic. Div. 



4f 



574-5 







17 5 



35 



25 23-78 



37 



553-0 



38 



940-5 



17 9 







25 15-65 



2 



523-7 



3 



847-1 



6! 



587-2 



n 



1141-8 





40 



21-77 



42 



555-9 



43 



941-4 





20 



08-72 



22 



531-5 



23 



829-6 



8f 



589-5 



n 



1133-8 





45 



20-55 



47 



551-3 



48 



944-9 





30 



09-42 



32 



5320 



33 



830-3 



llf 



595-1 









50 



20-65 



52 



544-6 



53 



945-2 





35 



10-06 



37 



540-3 



38 



830- 1 



12f 



598-0 



12f 



1138-9 





55 



10-83 



57 



582-6 



58 



926-3 





40 



12-93 



42 



524-9 



43 



827-9 



14| 



607-8 



13| 



11330 



17 6 







19-93 



2 



593-2 



3 



931-8 





45 



1305 



47 



512-6 



48 



822-5 







16| 



1108-8 





5 



34-44 













50 



10-83 



52 



513-9 



53 



811-0 



17| 



599-5 



18| 



1084-5 





7 



35-70 



7 



5640 









55 



08-83 



57 



521-3 



58 



804-6 



19! 



602-8 









8 



35-02 







8 



963-5 



17 10 







07-91 



2 



515-7 



3 



797-1 



21| 



601-5 



22| 



1056-0 





10 



32-60 



12 



554-9 



13 



984-8 





5 



06-06 



7 



516-2 



8 



793-7 



23| 



593-3 



24f 



1058-9 





15 



28-22 



15 



569-4 









10 



04-86 



12 



515-9 



13 



787-2 



27f 



580-9 



28| 



1051-4 









17 



571-1 



18 



975-6 





15 



03-45 



17 



518-7 



18 



779-5 



32 



568-4 



33 



1037-9 





20 



32-13 



20 



570-8 









20 



02-62 



22 



515-5 



23 



768-7 



37 



569-1 



38 



1039-3 









21 



561-8 









25 



01-39 



27 



520-4 



28 



758-1 



42 



5670 



43 



1024-1 









22 



551-0 



22 



972-1 





30 



00-77 



32 



527-2 



33 



750-9 



1 47 



552-7 



48 



998-1 





23 



34-27 



23 



541-5 









35 



02-60 



37 



520-0 



38 



746-5 



! 52 



550-4 



53 



974-7 









24 



539-8 



24 



971-9 





40 



04-98 



42 



516-8 



43 



743-3 



57 



553-6 



58 



957-1 





25 



28-82 



25 



541-8 









45 



06-06 



47 



513-2 



48 



737-0 



2 



546-3 



3 



948-3 









26 



547-4 









50 



05-08 



52 



520-5 



53 



7331 



7 



554-4 



8 



935-9 





27 



23-96 



27 



562-2 







* 



55 



0212 



57 



533-1 



58 



733-4 



12 



560-8 



13 



923-4 





28 



23-52 



28 



566-3 







17 11 







04-61 



2 



5300 



3 



727-3 



17 



566-1 



18 



918-1 









29 



580-2 



29 



980-2 





5 



06-86 



7 



520-4 



8 



728-3 



22 



568-3 



23 



916-5 





30 



26-70 



30 



577-2 









10 



06-70 



12 



514-6 



13 



734-7 



27 



552-6 



28 



921-8 









31 



573-6 



31 



9830 





15 



05-89 



17 



514-9 



18 



739-9 



! 32 



5610 



33 



916-5 





32 



29-53 



32 



572-0 









20 



06-39 



22 



515-9 



23 



742-4 



' 37 



554-3 



38 



924-6 





33 



3219 



33 



568-3 









25 



07-49 



27 



513-6 



28 



746-9 



1 42 



561-9 



43 



932-2 









34 



558-3 



34 



983-7 









32 



519-2 



33 



754-4 



47 



5641 



48 



937-1 





35 



34-07 



35 



549-2 









35 



08-83 



37 



513-3 



38 



755-6 



52 



566-7 



53 



943-9 









36 



545-7 



36 



985-6 





40 



07-94 



42 



517-9 



43 



755-6 



57 



564-6 



58 



951-9 





37 



31-34 



37 



546-6 









45 



08-56 



47 



516-6 



48 



755-5 



2 



562-8 



3 



945-2 





38 



30-57 



38 



547-6 







17 12 







10-38 



2 



504-1 



3 



749-8 



7 



558-2 



8 



9430 









39 



546-8 



39 



985-3 





5 



09-30 



7 



505-3 



8 



753-6 



12 



569-6 



13 



939-4 





40 



30-24 



40 



545-2 









10 



07-44 



12 



506-2 



13 



750-9 



17 



555-3 



18 



954-4 









41 



511-2 



41 



983-4 





15 



06-50 



17 



508-2 



18 



742-7 



22 



556-6 



23 



949-7 





42 



29-81 



42 



537-1 









20 



0603 



22 



506-6 



23 



738-0 



27 



560-5 



28 



948-2 





43 



28-65 



43 



535-9 









25 



06-07 



27 



514-5 



28 



726-5 



32 



565-9 



33 



955-4 









44 



535-8 



44 



974-2 









29 



517-4 







37 



568-6 



38 



964-4 





45 



26-72 







46 



967-6 





30 



0603 



32 



517-6 



33 



723-5 



42 



570-9 



43 



979-9 









47 



535-1 



48 



967-7 





35 



06-12 



37 



505-8 



38 



730-2 



47 



570-8 



48 



1006-4 





50 



25-02 



52 



529-1 



53 



954-8 





40 



06-09 



42 



499-7 



43 



732-5 



52 



5760 



53 



1005-5 





55 



19-69 



57 



534-1 



58 



942-7 





45 



04-71 



47 



511-7 



48 



743-8 



57 



577-7 



58 



10170 



17 7 







20-06 



2 



539-8 



3 



940-7 





50 



05-72 



52 



514-2 



53 



721-2 



2 



577-5 



3 



10160 





5 



17-96 



7 



552-5 



8 



941-8 









54 



504-5 



54 



730-9 



7 



572-6 



8 



10290 





10 



23-32 



12 



535-9 



13 



934-3 





55 



11-72 



56 



495-4 







12 



572-7 



13 



1013-3 





15 



24-39 



17 



528-5 



18 



946-4 









57 



491-0 



58 



700-7 



17 



559-9 



18 



10091 





20 



20-23 



22 



525-9 



23 



938-5 









59 



489-6 







22 



558-7 



23 



995-1 





25 



16-70 



27 



535-7 



28 



942-1 



17 13 







15-41 



1 



486-1 



2 



681-0 



27 



546-9 



28 



1000-8 





30 



1619 



32 



535-6 



33 



936-8 









3 



488-6 







32 



5530 



33 



974-9 





35 



15-47 



37 



537-4 



38 



933-4 





5 



15-62 



,7 



483-1 



8 



647-9 



37 



5551 



38 



961-7 





40 



13-88 



42 



537-8 



43 



927-8 









9 



484-8 







42 



551-6 



43 



952-3 





45 



14-10 



47 



532-8 



48 



929-5 





10 



11-75 



12 



494-6 



13 



648-1 



47 



557-7 



48 



936-2 





50 



13-72 



52 



534-3 



53 



935-2 





15 



10-47 



17 



502-8 



18 



652-3 



52 



561-3 



53 



928-3 





55 



13-23 



57 



533-5 



58 



9230 





20 



13-29 



22 



503-5 



23 



650-4 



57 



563-2 



58 



920-5 



17 8 







18-10 



2 



526-7 



3 



929-9 





25 



15-92 



27 



504-3 



28 



627-6 



2 



5650 



3 



915-6 





5 



15-99 



7 



520-1 



8 



893-2 





30 



16-45 







31 



618-8 



7 



559-4 



8 



915-9 





10 



12-13 



12 



522-8 



13 



904-7 









32 



502-9 



33 



615-2 



12 



559-4 



13 



917-5 





15 



11-30 



17 



521-5 



18 



895-8 





35 



16-15 



36 



495-3 







17 



552-2 



18 



927-7 





20 



11-35 



22 



523-9 



23 



890-0 









37 



497-5 



38 



613-4 



22 



546-6 



23 



939-8 





25 



1013 



27 



523-9 



28 



875-6 









42 



501-4 



43 



618-6 



27 



549-9 



28 



941-9 





30 



10-38 



32 



525-7 



33 



861-8 





44 



12-90 











32 



549-5 



, 33 936-1 





35 



11-12 



37 



527-9 









45 



11-95 



47 



511-2 



48 



630-3 





BlFILAR. 



*=0-000140. 



Balance. A-=0-0 



000085. 





April 17 d 



6h 20">. The readings of the 1 



jifilar diminished slowly and with 



jut vibration from 20 m ti 



11 23 m 55 s , when they began to in 



urease. 



continuing t 

 slightly. 

 * See not 



o increase till 29 m 15 s , when th 



ey again diminished gradually til] 



36 m , still without vibrat 



ion ; at 37 m the magnet began to vibrate 



js on the Aurora Borealis, after 



the Extra Observations of Magngtoi 



neters. 









































