ANNUAL VARIATIONS OF THE MAGNETIC ELEMENTS AT MAKERSTOUN 1843 - 1846. 
Trans. Roy. Soc. Edin Vol. AIL, Plate VI. 
Jan. Feb. Mar. Apr, May June Tuly Aug. Sept. Oct, Nov. Dee. dan, Feb, Mar. Apr. May June 
aie ve at ee ee ee ee 
Seale 1\ division =0'4 | | t 
| a ac ead fake — : 
| 
Declination ana 
| 
Dip 
Hor. Comp. ac 
of Force 
| 
Seale 1 div. 
a 22 
5 
} 
Total Force PN 
“EEN 
Annual Motions Monthly Motion i| 
Seale 1 division = 0'08 Scale 1 division =0'02 
OF T T ab T EY T 
Motions of a treely suspended Dipping Needle 
