Vertical Component of Magnetic Foece. 



383 



TABLE XLVIII. — Differences between the Hourly Means of Balance Micrometer Readings for 

 the whole series in each Month, and those for the selected Ten Days ; or Table XLII. minus 

 Table XLIV. 



TABLE XLIX. — Differences between the Hourly Means of Balance Micrometer Readings for the 

 whole series in each Month, and those for the selected Five Days ; or Table XLIL minus 



