Extra Observations of Magnetometers, May 16 — July 1. 1842. 



51 



Gottingen 

 Mean Time. 



Declination. 



Bifilar. 



Balance. 



Gottingen 

 Mean Time. 



Declination. 



Bifilar. 



Balance. 



Min. 

 of 

 Obs. 



Reading 

 Reduced. 



Min. 



of 



Obs. 



Reading 



Cor- 

 rected. 



Min. 



of 



Obs. 



Reading 



Cor- 

 rected. 



Min. 



of 



Obs. 



Reading 

 Reduced. 



Min. 



of 



Obs. 



Reading 



Cor- 

 rected. 



Min. 



of 



Obs. 



Reading 



Cor- 

 rected. 



d. h. 



m. 



, 



m. 



Sc. Div. 



m. 



5Iic. Div . 



d. h. 



m. 



' 



m. 



Sc. Div. 



m. 



Mic. Div. 



May 16 4 











58 



998 



May 25 5 



27 



132-13 



26 



557-3 







May 16 5 







149-71 



2 



574-3 













29 



554-8 









13 



144-42 



15 



554.3 



14 



1055 









30 



556-6 









16 



1 n 



141-93 

 139-72 



18 

 21 



549-1 

 546-7 



17 



20 



1069 

 1072 









34 



553-6 









19 



















22 



139-38 



24 



544-9 



23 



1077 



July 1 19 











58 



618 





25 



137-37 



27 



549-4 



26 



1074 



July 1 20 







126-42 



2 



479-8 









28 



134-53 



30 



551-5 



29 



1056 





6 



118-63 



7 



495-2 



9 



634 





31 



134-60 



33 



552-3 



32 



1042 





10 



122-33 



11 



513-5 



12 



634 





34 



134-82 



36 



554-9 



35 



1031 





13 



125-22 



14 



517-3 



15 



635 





37 



134-88 



39 



553-3 



38 



1022 





16 



125-48 



17 



507-2 









40 



135-22 



42 



552-9 



41 



1015 





18 



123-40 



19 



488-2 



20 



655 





43 



135-55 



45 



555-4 



44 



1008 





21 



122-73 



22 



472-4 



23 



666 





46 



135-55 



48 



556-6 



47 



1003 





24 



121-52 



25 



456-1 



26 



678 





49 



135-82 



51 



553-6 



50 



999 





27 



120-12 



28 



462-6 



29 



670 





52 



135-15 



54 



555-1 



53 



995 











(464-3) 









55 



1.34-33 



57 



555-4 



56 



989 





30 



119-85 



31 



473-1 



32 



661 





58 



134-33 



60 



554-8 



59 



984 











(474-8) 







May 16 6 



1 



134-20 



3 



556-0 



2 



980 





33 



119-18 



34 



491-5 



35 



655 





4 



134-13 



6 



558-3 



5 



975 





36 



117-37 



37 



499-6 



38 



654 





7 



135-08 



9 



558-9 



8 



970 











(503-3) 









10 



135-62 



12 



559-8 



11 



967 





39 



113-93 



40 



509-1 



41 



651 





13 



136-68 



15 



560-3 



14 



964 











(506-4) 









16 



136-88 



18 



558-3 



17 



962 





42 



106-55 



43 



489-1 



44 



672 





19 



137-37 



21 



557-3 



20 



960 











(487-5) 









22 



137-30 



26 



555-4 



24 



958 





45 



120-45 



46 



485-1 



47 



698 





28 



137-57 



31 



550-7 



29 



957 











(484-5) 









33 



137-15 



39 



548-0 



36 



951 





48 



128-03 



49 



467-8 



50 



701 





42 



136-02 



48 



548-5 



45 



941 





51 



119-45 







52 



703 





51 



136-02 



57 



556-1 



54 



932 





54 



126-15 



55 



464-8 



56 



716 



May 16 7 







136-35 



6 



555-5 



3 



928 





57 



133-67 



58 



459-0 



59 



721 





9 



136-35 



15 



556-9 



12 



922 



July 1 21 







130-78 



1 



443-6 



2 



720 





18 



137-50 







28 



920 











(445-1) 













40 



549-0 









3 



124-07 



4 



435-7 



5 



714 























(430-2) 

















J 



May 24 7 



30 



130-65 



32 



549-6 



34 



839 





6 



111-53 



7 



432-1 



8 



708 



May 24 8 







130-45 



2 



550-1 



4 



839 











(433-6) 













1 









9 



110-12 



10 



455-6 

 (456-6) 



11 



707 



May 25 2 



54 



135-28 



55 



546-0 



56 



823 







57 



135-62 



58 



545-9 



59 



821 





12 



116-83 



13 



461-3 



14 



710 



May 25 3 







135-02 



1 



547-3 



2 



819 





15 



114-42 



16 



439-5 



17 



718 





3 



135-02 



4 



549-0 



5 



819 











(436-3) 









6 



134-82 



7 

 11 



547-9 

 549-9 









18 



115-35 



19 



460-5 



(462-7) 



20 



733 









13 



546-9 









21 



131-25 



22 



478-3 



23 



726 









16 



544-7 











(127-17) 

















20 



549-3 









24 



127-97 



25 



481-0 



26 



720 





26 



134-33 



24 



548-8 



25 



816 











(483-2) 







Bifilar Tlierraometer. May 16* 5^ 1842, 67°'0 ; 6'', 67°-7 ; 7^, 67°-9. May 24'i 71' SO^", 5 



8°-0. May 25* S", 59°-5 ; 51", 61°-1. 



July I* 



201', 58°-4 ; aih, 58°-0. 







Balance Thermometer. May le* 5^, 64°-7 ; 6^, 65°-3; 7'', 65°-7. May 244 71' 30"=, 56°-7. 

 58°-4. 



May 25d S^, 58°-l. July 1* 2011, 5 



8°-7; 211', 



Arcs of Vibration. Declination Magnet. July 1* 20^ 0-°, 11'; 201" 6™, 7'; 201" IS'", 



8'; 201- 16^, 15'; 201- IS-", 17'; 20 



b 21m, U' 



20^ 24'°, 10' ; 20" SZ-^, 7'. Bifilar Magnet. July 1<^ 201' 2'", (22'iiv up) ; glh 4'", 14<iiv ; 21" 



7m^ IS*". 





The arcs of vibration given above are taken from the readings as registered, and are 1 



therefore generally less than the tr 



uth ; in a 



few cases the arc was noted at the time of observation. The arc has not been given exce 



pting when the difference of two cc 



)nsecutive 



readings exceeds 6' for the Declination and IQi for the Bifilar. AVhen the readings of the Bi 



filar do not shew a vibration but a p 



rogressive 



motion, the quantity moved in CO' is given in brackets with up or down attached as the read 



ing was increasing or diminishing. 





July l<i — 4>i. When an observation of the Bifilar is given in brackets ( ), it is the mea 



n position 25'' after the previous ob 



nervation ; 



an extra reading having been made at 50^ it is the mean of the readings at 0*, 25^, and 50^ 



The obsei'vations of Declination ii 



1 brackets 



are the mean positions 18' before the succeeding observation, obtained by making a readi 



Qg 36^ before the minute. 25= and 



18= being 



the times of vibration of the Bifilar and Declination magnets respectively. 







