150 



Abstkacts for the Vertical Force. 



TABLE XX. — continued. 



Month. 





Balance Ma 



gnetometer. 





Range. 



Lowest. 



Highest. 













Gbttingen 

 Mean Time. 



Reading. 



Gbttingen 

 Mean Time. 



Reading. 





1842. 



d. h. 



IMic. DiT. 



d. h. 



Mic. Div. 



Mic. Div. 



January 



31 20 



955-8 



18 5 



1038-2 



82-4 



February 



11 20 



852-3 



17 5 



1138-6 



286-3 



March 



23 5 



879-7 



28 5 



1003-2 



123-5 



April 



14 20 



609-3 



15 5 



1097-4 



488-1 



May 



28 2 



873-1 



16 5 



1087-4 



214-3 



June 



10 2 



845-1 



24 2 



930-6 



85-5 



July 



1 20 



693-7 



4 2 



1140-8 



447-1 



August 



5 20 



786-8 



19 5 



1228-5 



441-7 



September 



28 20 



810-5 



2 5 



940-5 



130-0 



October 



13 2 



811-8 



19 2 



929-0 



117-2 



November 



21 20 



701-0 



22 5 



906-1 



205-1 



December 



21 23 



769-4 



9 5 



842-7 



73-3 



The range of the Daily Observations in 1841, in parts of the whole Vertical Force, is 0"00820 ; the greatest 

 and least occur in October, and are 000634 above, and 000186 below, the mean of the month. 



The range of the Daily Observations in 1842 is 00394 ; the greatest force being in August 0"00485 above 

 the mean of the month, and the least occurs in April, being 0-00409 below the mean of the month. 



TABLE XXI. — The greatest and least Readings of the Balance Magnetometer for each of the Term-Days, 



Month. 



Balance Magnetometer. 



Range. 



Lowest. 



Highest. 



Gbttingen 

 Mean Time. 



Reading. 



Gbttingen 

 Mean Time. 



Reading. 



1841. 

 July 



August 



September 



October 



November 



December 



d. h. m. 



21 16 47J 

 17 12 57i 



22 10 7i 



20 19 27i 

 27 1 57* 

 22 18 57* 



Mic. Div. 



761-1 



d. h. m. 



21 10 17^ 



28 6 57i- 

 23 9 57i 



21 4 17* 

 26 11 57* 



22 10 27* 



Mic. Div. 



862-9 



Mic. Div. 



101-8 



356-4 



72-2 



307-8 

 31-5 

 96-3 



541-1 



897-5 



671-7 



743-9 



514-9 

 646-5 

 620-3 



822-7 

 678-0 

 716-6 



