CONTENTS. 1] 



PART III.— CLASSIFICATION. p^ge. 



LECTURE XXI.— Method of Tournefort.— System of Linnaeus.— Natural Methods.— Meth- 

 od of Jussieu.— Comparison between the Classifications of Tournefort, Linnaeus, 

 and Jussieu 134 



LECTLTIE XXU.— Characters used in Classification 130 



LECTURE XXIII.— Use of Botanical Names.— Artificial Classes and Orders considered in 



Groups. — Classes Monandria and Diandria 134 



LECTURE XXIV.— Class m. Triandria.— Class IV. Tetrandria 139 



LECTURE XXV.— Class V. Pentandria H6 



LECTURE XXVI.— Class V. Pentandria continued 151 



LECTURE XXVIL— Class VI. Hexandria.— Class VIL Heptandria 154 



LECTURE XXVm.— Class VUI. Octandria.— Class K. Enneandria 159 



LECTURE XXIX.— Class X. Decandria 162 



LECTURE XXX.— Class XL Icosandria 166 



LECTURE XXXI.— Class XH. Polyandria 168 



LECTURE XXXII.— Class XIIL Didynamia.- Class XIV. Tetrady namia 171 



LECTURE XXXIII.— Class XV. Blonadelphia 175 



LECTURE XXXrV.— Class XVI. Diadelphia 173 



LECTURE XXXV.— Class XVIL Syngenesia 181 



LECTURE XXXVL— Class XVni. Gynandria 187 



LECTURE XXXVIL-Class XIX. Monoecia. Class XX. Difficia 189 



LECTURE XXXVIII.— Class XXI. Cryptogamia 194 



PART IV. 



LECTLTIE XXXIX.— The Flowering season of Plants.— Vernal and Summer Flowers 201 



LECTURE XL.— Autumnal Flowers. — Evergreens. — Ancient Superstitions respecting 



Plants. — Various Phenomena of Plants 205 



LECTURE XLL— Habits of Plants.— Agents which affect their growth.— Their Habitations. 



— Geographical situations.— Elevation corresponding to latitude.... 209 



LECTURE XLn.— Plants as affected by cultivation.— Change of organs.— Diseases.— Eco- 

 nomical uses 214 



LECTURE XLIII.— History of Botany from the Creation of the World to the revival of let- 

 ters in the reign of Charlemagne, A. D. 770 219 



LECTURE XLIV.— History of Botany fromi the 8th century to the discovery of America. .. 223 



LECTURE XL v.— History of Botany from the beginning of the 16th century to the time of 



Linnaeus 226 



LECTURE XLVI.— History of Botany from the time of Linnaeus to the present 230 



LECTURE XLVIL— General Views of Nature.— Organized and Inorganized bodies.— Clas- 

 sification of Animals 235 



LECTURE XLVm. — Comparison between Animals and Plants. — Conclusion..... 243 



PART v.— APPENDIX. 



Illustration of the Habks of Plants 2 



Natural Orders - 27 



Description of Genera 34 



Description of Species 71 



Vocabulary 153 



Symbolical Language of Flowers 171 



Alphabetical Indexes 175 



Common names of Plants , 181 



