CONTENTS. i x 



LECTURE XVII. P. 140. 



Physiological Views. Solid parts of vegetables. -Fluid parts of veg- 

 etables. 



LECTURE XVIII. P. 147. 



Bark, Wood and Pith. Growth of a Plant. 



LECTURE XIX. P. 156. 

 Chemical Composition of Plants. 



PART III. 



LECTURE XX. P. 163. 



Method of Tournefort. System of Linnaeus. Method of Jussieu. 

 Natural Method of Linnaeus. 



LECTURE XXI. P. 172. 

 Characters used in classification. 



LECTURE XXII. P. 176. 

 Natural Families. 



LECTURE XXIII. P. 194. 



Use of Botanical Names. Artificial classes and orders considered in 

 groups. Classes i. and n. 



LECTURE XXIV. P. 200. 

 Classes m. and rv. 



LECTURE XXV. P. 209. 

 Class v. ; Pentandria. 



LECTURE XXVI. P. 216. 

 Class Pentandria, continued. 



LECTURE XXVII. P. 219. 

 Class vi. ; Hexandria, and Class vn. ; Heptandri'a. 



LECTURE XXVIII. P. 225. 

 Class vm. ; Octandria. Class ix. ; Enneandria. 

 LECTURE XXIX. P. 229. 

 Class x. ; Decandria. 



LECTURE XXX. P. 234. 

 Class xi. ; Icosandria. 



LECTURE XXXI. P. 238. 

 Class xn. ; Polyandria. 



LECTURE XXXII. P. 242. 

 Class xni. ; Didynamia, and Class xrv., Tetradynamia. 



LECTURE XXXIII. P. 244. 

 Class xv. ; Monadelphia. 



LECTURE XXXIV. P. 248. 

 Class xvi. ; Diadelphia. 



LECTURE XXXV. P. 252. 



Class xvn. ; Syngenesia. 



LECTURE XXXVI. P. 257. 



Class xvin.; Gynandria. 



LECTURE XXXVII. P. 261. 

 Class xix. ; Monoecia, and Class xx. Dioacia. 



LECTURE XXXVIII. P. 267. 



Class xxi. ; Cryptogamia. 



