no Table 90. 



TERRESTRIAL MAGNETISM. 



Secular Change ol Declination. 



Changes in the magnetic declination between iSio, the date of the earliest available observa- 

 tions, and 1910, for one or more places in each state and territory. 



* Tables have been compiled from United States Magnetic Tables and Magnetic Charts for 1905, published by 

 the Coast and Geodetic Survey in igoS. 

 Smithsonian Tables. 



