278 
Chr. Hansteen 
For at vise, at den magnetiske Inclination ogsaa har 
en aarlig Periode skal jeg sammenstille følgende Middel- 
værdier af samme for hver Maaned fra April 1855 til April 
1861, nemlig Middelværdierne af Formiddags- og Eftermid- 
dao-s-Inclinationerne ved deres Maximum og Minimum. 
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