52 PROFESSOR HENRY AND THE 



devices by which it could so operate and who 

 applied those devices to an operative telegraph, of 

 the same form and substance as that now in use 

 all over the world. Beyond their discoveries and 

 inventions nothing is essential to the present tele- 

 graph, except that which was of common knowl- 

 edge when those discoveries were completed, and 

 that ordinary mechanical skill which is far below 

 the level either of discovery or invention. 

 This is the record, and so it will stand forever. 



" The moving finger writes ; and having writ, 

 " Moves on : nor all your piety nor wit 

 " Shall lure it back to cancel half a line, 

 " Nor all your tears wash out one word of it." 



Forty years had fled away since as teacher and 

 pupil we first met, and they seemed like a dream 

 that is past, when again we met to part forever 

 in this world. In the chamber where the 

 angel of death hovered over him, just ready to 

 call him away, he talked thankfully of the past, 

 and hopefully of that eternity on whose verge he 

 stood. The vigor of youth and of manhood had 

 been all spent in the service of humanity, and his 

 strength was gone. The pallor of disease had 

 dispelled the delicate hues of health, and time had 

 traced its furrows on his brow. But the unclouded 

 intellect still held its sway, enthroned in that 

 magnificent head on which the snows of many 

 winters had drifted ; and the gentle loving spirit 



