HEMLOCK. 



127 



82. The plant which furnishes us the medicine called ipeca- 

 cuanha, used as an emetic, bears considerable analogy to the 

 coffee tree, and is found in South America. 



83. The Cinchona or Peruvian bark, so valuable in the treat- 

 ment of intermittent fevers, is the bark of certain trees which 

 also belong to the family of Rubia'cea? ; they grow in Peru. 



POLYPE'TALOUS DICOTY'LEDONS. 



84. This division is distinguished from the two preceding by 

 having flowers, the corolla of which is composed of several 

 separate petals. It is also divided in accordance with the inser- 

 tion of the stamens into three sections called Epipeta'lece (epi, 

 upon), Hypopeta' lecB (hypo, beneath), and Peripeta! lea (pexi, 

 around), which, in their turn, are subdivided into families, the 

 most remarkable of which are the Umbelli'ferse, the Malva'cese, 

 the Gerana'cese, the Aurantia'ceaB, the Papavera'ceoe, the Cary- 

 ophy'llere, the Ampe'lidse, the Cucurbita'cese, the Myrta'cese, the 

 Rosa'ceae, the Legumino'sa3, the Terebintha'cea?, &c. 



Fig. 156. HEMLOCK. 



82. Where does ipecacuanha grow ? 



83. To what family does Peruvian bark belong ? 



84. What are the general characters of the polypetalous dicoty'ledons 7 

 How are they divided ? 



: *" ?b?.>- .-- :.-. V= iriCV^.^." ivs? 3* 



