16 A COMPENDIUM OF 
the arrangements of the vegetable world, and 
why botanists have placed them in classes, 
orders, genus and species, with a kind of chart 
appended to enable you to memorize what we 
have already said. The object is to introduce 
to your notice the plants which are used for the 
amelioration of pain and the cure of disease, 
and with which you may come in contact from 
day to day as a part and parcel of your labor, 
either in an orginal form or in some compound 
which is the result of your skill. 
