INTRODUCTION. 
13 
her great industries, e.g ., cinchona, to her rivals in other 
parts of the world, and must beware lest others follow in 
the daily increasing competition. If she is to hold her own 
she must steadily improve her methods of cultivation and 
preparation of her products, rely less on a few important 
staples and encourage the cultivation of others, adopt every 
precaution to keep her crops free of disease, and in fact 
progress with the times, using all the resources of the most 
enlightened knowledge. It is our hope that the present 
work may assist in this. 
