6 " CONTENTS. 



Plants furnishing root drugs — Continued. Page. 



Pinkroot ( Spigelia marilandica ) 52 



American Colombo ( Frasera carolinensis) 5.3 



Black Indian hemp {Apocynum cannabinum ) 55 



Pleurisy-root {Asrlepia^ tuherosa) 56 



Comfrey {Symphytum officinale) 57 



Stoneroot ( Collinsonia canadensis) 58 



Culver' s-root ( Veronica virginica) 59 



Dandelion ( Taraxacum officinale) 60 



Queen-of-the-meadow ( Eupatorium purpureum ) 61 



Elecampane ( Inula helenium) - - 62 



Echinacea ( Brauneria angustifolia ) 63 



Burdock (Arctium lappa ) 1 64 



Explanation of plates 68 



Index 69 



107 



