

louiiaca U> Uicl.:ud A. I'roirlor, i3ii. 



With which is incorporated Hiirdwicke's Science Gossip, and the Illustrated Scientitic News. 



A Monthlv Record of Science. 



i-nNniTTKn nv 



Wilfred Mark Webb, F.L.S., and E. S. Grew, M.A. 



Let Knowledge grow from more to more." 



— Tennyson. 



Volume XXXV. 



New Series, Volume IX. 



1912. 



London : 



Knowledge Publishing Company, Limited, 

 42. Bloomsbur)- Square, W.C. 



