62 



Obseevations of Magnetic Dip, April 29. 1841 — March 14. 1842. 



Gbttingen 



Dura- 

 tion 





No. 



Mean of Readings. 



A. North 







Mean Time, 

 Commencement of 



of 

 Obser- 



Thermo- 

 meter. 



of 

 Needle. 







Minus 

 B. North. 



Observed 

 Dip. 



Remarks. 



End a. 



EndB. 



Observations. 



vation. 







North. 



North. 









d. h. m. 



m. 



" 





o / 



o , 



' 



, 





1841. 

















^Unsatisfactory observation. Instrument out 



Apr. 29 









71 29-13 



71 24-00 



-1- 5-13 



71 26-56 



< of adjustment. Observers, Professor Forbes 

 ( and Mr. Russell. 

 I^Double observation ; unsatisfactory. Needle 



July 7 1 





61-0 



1 



71 19-4 



71 28-4 



- 9-00 



71 23-9 



< continually getting iato contact with limb. 

 ( Observers, Mr. Main and Mr. Russell. 



July 20 6 







2 



71 15-50 



71 29-37 



-13-87 



71 22-45 





July 20 7 10 





60-0 





71 23-12 



71 23-00 



+ 0-12 



71 2306 





Sept. 6 6 5 









71 27-12 



71 21-12 



+ 6-00 



71 24-12 





Sept. 6 6 55 







2 



71 19-62 



71 32-37 



-12-75 



71 26-00 





Sept. 14 5 





69-0 





71 29-00 



71 27-50 



+ 1-50 



71 28-25 





Sept. 14 5 45 





69-0 



2 



71 19-62 



71 35-25 



-15-63 



71 27-44 





Sept. 27 20 20 





550 





71 29-38 



71 23-00 



+ 6-38 



71 26-19 





Oct. 4 20 40 





550 





71 35-62 



71 30-38 



H- 5-24 



71 33-00 





Oct. 8 5 15 





56-5 





71 30-75 



71 18-25 



+ 12-50 



71 24-50 





Oct. 11 20 20 





45-5 





71 28-88 



71 20-25 



+ 8-63 



71 24-56 





Oct. 15 5 10 





48-0 





71 38-38 



71 21-38 



+ 17-00 



71 29-88 





Oct. 18 20 20 





38-0 





71 43-75 



71 23-87 



+ 19-88 



71 33-81 





Oct. 22 5 15 





48-0 





71 38-25 



71 16-25 



+ 22-00 



71 27-25 





Oct. 25 20 20 





40-0 





71 37-25 



71 25-37 



+ 11-88 



71 31-31 





Oct. 29 5 20 





52-6 





71 28-12 



71 17-75 



+ 10-37 



71 22-94 





Nov. 1 20 15 





37-0 





71 28-88 



71 22-62 



+ 6-26 



71 25-75 





Nov. 5 5 10 





50-0 





71 26-38 



71 2200 



+ 4-38 



71 24-19 





Nov. 8 20 15 





49-6 





71 31-38 



71 24-62 



+ 6-76 



71 28-00 





Nov. 12 5 20 





44-5 





71 29-75 



71 26-37 



+ 3-38 



71 28-06 



■ 



Nov. 15 20 20 





28-5 





71 23-38 



71 30-00 



- 6-62 



71 26-69 





Nov. 19 5 10 





45-0 





71 22-25 



71 2600 



- 3-75 



71 24-12 





Nov. 22 20 20 





36-3 





71 26-00 



71 10-88 



+ 15-12 



71 18-44 





Nov. 26 6 45 









71 32-25 



71 17-00 



+ 15-25 



71 24-62 



t 



Nov. 29 20 20 





45-0 





71 18-88 



71 25-62 



- 6-74 



71 22-25 





Dec. 28 2 







1 



71 28-88 



71 17-75 



+ 11-13 



71 23-31 



(This and the two following observations made 

 ( by Professor Forbes. 



Dec. 28 23 







2 



71 21-00 



71 3300 



-1200 



71 2700 



JA small knife in the observer's pocket while 

 \ observing B. North. 



Dec. 29 10 







2 



71 16-38 



71 30-62 



- 14-24 



71 23-50 





1842. 



















Jan. 14 5 10 





47-0 





71 24-25 



71 17-62 



+ 6-63 



71 20-94 





Jan. 17 20 20 





38-0 





71 2700 



71 11-62 



+ 15-38 



71 19-31 





Jan. 24 20 10 





39-0 





71 26-50 



71 2000 



+ 6-50 



71 23-25 





Jan. 28 5 10 





51-0 





71 23-25 



71 25-50 



- 2-25 



71 24-38 





Jan. 31 20 15 





45-0 





71 23-88 



71 22-62 



+ 1-26 



71 23-25 





Feb. 4 5 10 





53-0 





71 28-75 



71 22-88 



+ 5-87 



71 25-81 





Feb. 7 20 20 





45-0 





71 31-25 



71 22-50 



+ 8-75 



71 26-88 





Feb. 11 5 15 





53-0 





71 27-62 



71 20-50 



+ 7-12 



71 24-06 





Feb. 14 20 25 





51-0 





71 27-12 



71 23-88 



+ 3-24 



71 25=50 





Feb. 18 5 15 





56-0 





71 3012 



71 26-88 



+ 3-24 



71 28-50 





Feb. 21 20 20 





400 





71 24-62 



71 23-78 



+ 0-84 



71 24-20 





Feb. 25 5 20 





49-0 





71 25-00 



71 26-50 



- 1-50 



71 25-75 





Mar. 4 5 20 





550 





71 27-00 



71 21-37 



+ 5-63 



71 24-19 





Mar. 7 20 15 





490 





71 26-62 



71 21-25 



+ 5-37 



71 23-94 





Mar. 11 5 20 





53-0 





71 28-50 



71 18-62 



+ 9-88 



71 23-56 





Mar. 14 20 30 





500 





71 26-50 



71 23-75 



+ 2-75 



71 25-12 



. 



1 



