^ March 23, 19 



3.19" J 



Nature 



A WEEKLY 



ILLUSTRATED JOURNAL OF SCIENCE 



VOLUME LXXXV 



NOVEMBER, 1910, to MARCH, 1911 



" To the solid ground 

 Of Nature trusts the mind which builds for ay*;."— Wordsworth 



iipa ." 



MACMILLAN AND CO., Limited 

 NEW YORK: THE MACMILLAN COMPANY 



