SUPPLEMENT TO VOLUME XXII. 
OF THE 
mn A Nees OC TIONS 
OF THE 
ROYAL SOCIETY OF EDINBURGH, 
CONTAINING THE 
MAKERSTOUN MAGNETICAL AND METEOROLOGICAL 
OBSERVATIONS 
FROM 1847 To 1855. 
EDINBURGH : 
PUBLISHED BY ROBERT GRANT & SON, 82 PRINCES STREET; AND 
T. CADELL, STRAND, LONDON. 
MDCCCLX. 
