LIST OF ILLUSTRATIONS. 
Plates 1 to 14.—Professor A. W. Rucker and Dr. T. E. Thorpe on a Magnetic 
Survey of the British Isles for the Epoch January 1, 1886. 
Plates 15 and 16. —Mr. C. Chree on the Effects of Pressure on the Magnetisation of 
■ Cobalt. 
