Sit/^Uinent to Naturc,~\ 

 May 30, 1895 J 



Nature 



A WEKKI.Y 



ILLUSTRATED JOURNAL OF SCIENCE 



^^OLUME LI 



NOVEMBER 1894 to APRIL 1895 



" To the solid ground 

 0/ Niilure trusts the mind which builds for aye." — Wordsworth 



^%^- 



M ACM I L LAN AND CO 



