DIURNAL VARIATIONS OF THE VERTICAL COMPONENT OF MAGNETIC FORCE AT MAKERSTOUN 1845-1846. 
- Trans. hoy, Soc. Edin. Vol. XIX Fart IT. Plate HT. 
AM See AM 
eee etn ee Le!) Pen) ee es Mee) Oe BS FB 8 2) MN 22 PR SG 8S 6 BGO! BO 
1 r T 7 7 i oo a £ = 
| 
Dec._ Feb. 
Mar._ Apr. aon 
May,.June 
July, Aug. 
Sept.— Nov. 
Sept. Feb. 
Mar._Aug. 
Year 
Ce JB iS ca a . en We Mi aH ey 
Positive Ordinates indicate increasing Vertical Force. Scale, 1 Diy.= 0-0001; Vert. Force=I. 
Mean of all, Mean of undisturbed days. 
