Dccenilcr lo, 1903 J 



Nature 



A WEEKLY 



ILLUSTRATED JOURNAL OF SCIENCE 



VOLUME LXVIII 



MAY to OCTOBER 1903 



" To the solid ground 

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





MACMILLAN AND CO., Limited^ 

 NEW YORK: THE MACMILLAN COMPANY 



