Horizontal Component of Magnetic Force, 1845. 



17 



TABLE XXX. — Mean DiflFerence of a Single Observation of the Bifilar Magnetometer from the 

 Monthly Mean at the corresponding Hour, for each Hour in each Month in 1845. 



Mak. 

 M. T. 



Jan. 



Feb. 



March. 



April, 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



Year. 



h. 



Sc. Div. 



Sc. Div. 



Sc. DiT. 



Sc. Div. 



So. Div. 



Sc. Div. 



Sc. Div. 



Sc. Div. 



Sc. Div. 



Sc. Div. 



Sc. Div. 



Sc. Div. 



Sc. Div. 



12 



5-82 



4-31 



3-59 



8-02 



3-91 



2-04 



2-53 



3-40 



5-72 



5-62 



2-52 



6-94 



4-54 



13 



611 



4-86 



4-03 



8-93 



3-57 



2-70 



2-68 



3-60 



4-51 



3-20 



2-63 



6-32 



4-43 



14 



14-29 



4-37 



6-14 



18-24 



3-44 



2-47 



2-08 



4-87 



4-11 



3-30 



2-23 



5-19 



5-89 



15 



4-46 



4-00 



3-67 



4-38 



4-34 



2-84 



2-89 



3-38 



4-05 



2-50 



2-44 



4-48 



3-62 



16 



4-31 



305 



5-29 



5-14 



319 



2-80 



3-69 



2-63 



3-78 



2-61 



2-80 



3-28 



3-55 



17 



3-50 



3-63 



3-27 



3-90 



3-55 



2-07 



2-65 



3-42 



4-48 



3-03 



2-46 



3-87 



3-32 



18 



2-63 



2-93 



242 



3-61 



3-81 



2-27 



2-92 



3-77 



4-89 



3-30 



2-94 



3-24 



323 



19 



2-95 



3-10 



3-10 



3-38 



4-62 



2-60 



2-81 



4-35 



5-48 



1-99 



4-17 



3-04 



3-47 



20 



3-19 



3-28 



3-58 



3-42 



4-41 



3-00 



3-46 



5-22 



5-58 



3-43 



3-49 



3-30 



3-78 



21 



3.80 



5-59 



2-95 



3-53 



3-25 



3-10 



3-12 



4-38 



3-49 



3-47 



4-99 



3-84 



3-79 



22 



4-73 



3-62 



3-65 



3-72 



2-58 



3-61 



4-49 



512 



4-51 



2-89 



3-82 



3-88 



3-88 



23 



4-10 



3-40 



2-56 



4-16 



3-46 



3-94 



4-57 



5-05 



419 



4-29 



4-64 



4-39 



4-06 







4-79 



4-77 



2-80 



2-98 



3-70 



4-04 



3-58 



4-90 



3-32 



4-07 



3-61 



5-43 



4-00 



1 



3-82 



3-52 



2-41 



3-67 



3-30 



3-35 



4-33 



5-70 



3-77 



4-48 



3-65 



411 



3-84 



2 



3-94 



2-90 



2-39 



4-08 



403 



3-91 



3-31 



6-50 



4-80 



3-60 



3-93 



3-96 



3-95 



3 



2-53 



2-99 



2-27 



4-42 



4-12 



3-76 



3-98 



6-36 



4-77 



3-20 



2-73 



3-21 



3-70 



4 



3-33 



2-90 



4-42 



4-61 



4-66 



3-56 



2-66 



4-77 



5-31 



3-13 



4-73 



3-53 



3-97 



5 



3-63 



3-08 



1-77 



2-93 



3-68 



3-80 



3-65 



2-97 



3-16 



2-68 



3-82 



4-09 



3-27 



6 



3-43 



4-22 



3-00 



2-27 



3-55 



3-50 



2-98 



2-22 



2-32 



2-71 



3-70 



13-27 



3-93 



7 



511 



2-55 



3-22 



2-54 



3-04 



3-28 



3-17 



2-62 



4-06 



2-53 



4-76 



6-62 



3-62 



8 



4-53 



3-42 



4-02 



3-63 



2-61 



2-05 



3-00 



3-33 



5-73 



2-20 



4-69 



6-69 



3-82 



9 



7-32 



4-39 



4-19 



3-01 



3-19 



2-34 



2-61 



4-34 



3-38 



3-29 



4-65 



5-71 



4-03 



10 



8-07 



3-82 



3-77 



3-80 



2-74 



2-20 



2-99 



2-83 



4-91 



4-54 



3-55 



5-82 



4-09 



11 



9-25 



3-66 



3-33 



3-17 



3-40 



3-09 



2-52 



3-20 



4-39 



5-00 



2-92 



5-41 



411 



MAG. AND MET. OBS. 1845 AND 1846. 



