CONTENTS. 
11 
PART III.— CLASSIFICATION. p,g, 
LECTURE XXL— Method of Tournefort.— System of Linnseus— Natural Methods.— Meth- 
od of Jussieu.— Comparison between the Classifications of Tournefort, Linnaeus, 
and Jussieu 124 
LECTURE XXIL— 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 HI. Triandria.— Class IV. Tetrandria 139 
LECTURE XXV.— Class V. Pentandria 146 
LECTURE XXVI.— Class V. Pentandria continued 151 
LECTURE XXVII.— Class VI. Hexandria.— Class VII. Heptandria 154 
LECTURE XXVm.— Class VHI, Octandria.— Class IX. Enneandria 159 
LECTURE XXIX.-Clas3 X. Decandria 162 
LECTURE XXX.— Class XL Icosandria 166 
LECTURE XXXI.— Class XII. Polyandria 168 
LECTURE XXXn.-^Class XIIL Didynamia.— Class XIV. Tetradynamia 171 
LECTURE XXXIII.— Class XV. Monadelphia 175 
LECTURE XXXIV. -Class XVI. Diadelphia 178 
LECTUKij AXAV.— Class XVIL Syngenesia jSl 
LECTLTRE XXXVL— Class XVffl. Gynandria I87 
LECTURE XXXVIL— Class XIX. Monoecia. Class XX. Dioecia 189 
LECTURE XXXVUL- Class XXL Cryptogamia I94 
PART I Y. 
LECTURE 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 XLIIL— 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 from the 8th century to the discovery of America. . . 223 
LECTLUE XLV.— History of Botany from the beginning of the 16th century to the time of 
Linuoeus ^ 226 
LECTURE XLVL— History of Botany from the time of Linnseus to the present 230 
LECTURE XL VIL— General Views of Nature.— Organized and Inorganized bodies.-Clas- 
sification of Animals ^ 235 
LECTURE XLVin.— Comparison between Animals and Plants.— Conclusion 243 
PART v.— APPENDIX. 
Illustration of the Habits of Plants g 
Natural Orders , ^ "* ^ 
Description of Genera J ^ ^ 
Description of Species 
Vocabulary ^ ^ 
Symbolical Language of Flowers 
Alphabetical Indexes /. 175 
Common names of Plants 
