X CONTENTS. 



CHAPTER PAOM 



XVIII. LIFE AND LETTERS OP FARADAY. . . . 399 



XIX. THE COPLEY MEDALLIST OF 1870 . 422 



XX. THE COPLEY MEDALLIST OF 1871 . . . 429 



XXI. DEATH BY LIGHTNING . . 439 



XXII. SCIENCE AND THE SPIRITS . 444 



MAP 



SHOWING THE PARALLEL BOADS OF GLEN ROY . tofacep. 227 



