THE MOST RECENT VALUES OF THE MAG- 

 NETIC ELEMENTS AT THE PRINCIPAL 

 MAGNETIC OBSERVATORIES OF THE 

 WORLD. 



-From Data kindly supplied by Kew Observatory 



Committee. 



THE data in the table are deduced from hourly readings 

 of the magnetic curves in the case of Pawlowsk, 

 Katharinenburg, Copenhagen (Declination and Horizontal 

 Force), Hamburg (Declination), Wilhelmshaven (Declina- 

 tion), Potsdam, Irkutsk, Utrecht (Declination), Kew, Green- 

 wich, Uccle (Declination), Falmouth (Declination and 

 Horizontal Force), Pare Saint Maur, Vienna, Pola, Nice 

 (Declination), Perpignan, Tiflis, Washington, Zi-ka-wei, 

 Manila, Batavia, and Mauritius. 



In the case of Kasan (Declination and Horizontal Force), 

 Prague (Declination and Horizontal Force), O'Gyalla (De- 

 clination and Horizontal Force), Madrid (Declination), 

 Coimbra (Declination), and Lisbon (Declination), the diur- 

 nal inequality has been at least partly allowed for by the 

 employment of readings at two or more hours of the day. 



The first results of Inclination and Vertical Force at 

 Greenwich are deduced from readings with 3-inch dip 

 needles only, the second from readings with 3, 6, and 

 9 inch needles. Allowance has been made for a slight 

 disturbance through recent building, in accordance with 

 data kindly supplied by the Astronomer Royal. 



The Declination at Kasan in last year's table was 

 erroneously given as West. 



