THE CHAD WICK LIBRARY 



FORESTS WOODS AND 

 TREES 



IN RELATION TO HYGIENE 



BY 



AUGUSTINE HENRY 



M.A., F.L.S., M.R.I. A. 



PROFESSOR OF FORESTRY, ROYAL COLLEGE OF SCIENCE, DUBLIN 



PUBLISHED BY 



E • P • DU TTON • & • COMPANY 



68l:|IifJHjWENUE 

 NEW-YOPK.ra^ 



ESTABUSHEDiSS^, 



