5' ;rv 



Nature, "] 

 /une 8, 1899J 



Nature 



A WEEKLY 



ILLUSTRATED JOURNAL OF SCIENCE 



VOLUME LIX 



NOVEMBER 1898 to APRIL 1899 



" To the solid ground 

 Of Nature trusts the mind which builds for aye." — Wordsworth 



MACMILLAN AND CO., Limited 

 NEW YORK: THE MACMILLAN COMPANY 



