uhptement' to Nature 1 

 November 2,Ot 1893 J 



Nature 



A WEEKLY 



ILLUSTRATED JOURNAL OF SCIENCE 



r7 



VOLUME XLVIII 



MAY 1893 to OCTOBER 1893 



" To the solid ground 

 Of Nature trusts the mind which builds for aye:' — Wordsworth 



"#' 



MACMILLAN AND CO. 



