Arde. 
the SP. 
ae a Fe 
oY“ 
CONTENTS. 
4, 
Wee et 
CHAPTER I. 
INTRODUCTORY REMARKS. 
Hardiness of natives and exotics . 
Effects of mildew and excessive ee e e 
° . *. > ll 
+ ose. £e 
LataGpery «+ 
o- bd ° . 
BNMEEENESES S65 
ao) 
mm 
Sa 
