DIUR^^AL VAEIATIOXS OF THE HORIZONTAL COWONENT OF MA&NETIC FORCE AT MAEFRSTOUN 1845 -184-6, 
======^ Tr<ms.Roy.Soc.SdirL.Vol.jaX:rartlI.riateE. 
AM 
PM 
AM 
Dec. .Feb. 
2[ar.^Apr. ^ 
May. Jitiif: 
JuItj. Aug. X 
Sept.^Xov. £^ 
Sept. -Feb. 
Mar. -.Aug. 
Mean, 
Mecav 
MecoL 
Mean. 
Mean 
Meart 
Mean 
Mean. 
Positive OrdjULoJxs inMcate increcusing Horizontal Force. Scale. 1 J)vv. = O- 00 O'i.Uor.Foixe -1. 
-^^■^y^^ Mearc oF all . ../ ' . . Memt of imdistiirbecL days. 
£nq^bu Gco.A.t)<jnan 
