THE BOOK OF 



NATURE STUDY 



EDITED BY 



J. BRETLAND FARMER 



M.A., D.Sc.(OxoN.), F.R.S. 



PROFESSOR OF BOTANY, ROYAL COLLEGE OF SCIENCE, LONDON 



ASSISTED BY 



A STAFF OF SPECIALISTS 



FULLY ILLUSTRATED 



VOL. IV 



LONDON: 

 THE CAXTON PUBLISHING COMPANY 



CLUN HOUSE, SURREY STREET, W.C. 



