INDEX SLIP. 
Wat.sox, William.—A Determination of the Yalue of the Earth’s Magnetic 
Field in International Units, and a Comparison of the Results with the 
Yalues given by the Kew Observatory Standard Instruments. 
Phil. Trans., A, vol. 198, 1902, pp. 431-462. 
Kew Observatory Standard Magnetic Instruments—comparison of readings 
with values obtained by a coil. 
Watson, William. 
Phil. Trans., A, vol. 198, 1902, pp. 431-462. 
Magnetic Field—Measurement of Earth’s. 
Watson, William. 
Phil. Trans., A, vol. 198, 1902, pp. 431-462. 
