216 THE MAGNETIC DECLIXATIOIS" i:sr TEIXCE GEOKGe's COUNTY 



Magnetic Declinations in Pkince George's County. 



Explanations. 



The date of observation is given in years and tenths of: January 1. inoo, would 

 accordingly be expressed by 1900.0 and similarly with regard to January 1, 1905, or 



1910.0. 



door of tlie Academy building and 58 feet from the fence on the 

 street, and the north stone is on the same grounds, on the edge of the 

 blnff. 



Descriptiox of Stations. 



CheJicnliam, 1902-09. — At the Magnetic Observatory of the United 

 States Coast and Geodetic Snn'cy, on the grounds of the House of 

 Keformation. 



Upper Marlboro, 1S9G and 1903. — In the southeast corner of the 

 court-house grounds, down in the hoHow; 13.9 feet west of maple 



