X INTRODUCTION. 



h 



luable plants and not offered a sufficient quan- 

 tity of generic Types t>r typical Equivalents. 



59. AVhen a Genus contains several medical 

 species, on]y one is figured^ unless their pro- 

 perties are quite different^ and the others are 

 mentioned with some remarks as equivalent 

 substitutes. The plants of genera not figured 

 are inserted in the general table or appendix. 



60. Tlie Botanical alphabetic order has been 

 adopted, as the most easy, obvious and service- 

 able, since no scientific arrangement could hare 

 been equally available. 



61. The medical arransrements are as nume- 

 rous as the writers oti Materia Medica. Every 

 plant having commonly many properties, cannot 

 be classed into any definite medical order, but 

 should belong to several at the same time. 



62. The defective and indelicate sexual sys- 

 tem of Linnseus is now too obsolete for the state 

 of the science. 



63. The natural method would have been 

 preferred, if the novelty of the attempt had not 

 been anticipated as an obstacle to practical use. 



64. Most of the figures have been drawn by 

 the author, and a few reduced from Bigelow or 

 Barton ; they have been engraved and printed 

 in a style suited to the assumed purpose, 



65. For the sake of perspicuity and conveni- 

 ence every article is divided into sections. The 



names are at the head, and the Botanical name 

 is the first. 



66. The English, French and German names 

 are given, next the officinal names used iu 

 Pharmacopeias, and last the vulgar or common 



names of the country, which are variable in al- 



