XXIV 



TABLE OF CONTENTS. 



PART III.— GEOGRAPHICAL BOTANY, OR THE DISTRIBUTION 

 OF PLANTS OVER THE GLOBE. 



i. — epikrheoloa's', ob the ihtlubnoe of vabious extebnal 

 Agents on Plahts 



1. Effects of Temperature . 



2. Effects of Moisture 



3. Effects of Soil, Light, and other Agents 



II. — ^DissBMnrATiow of Plants 



1. Agents employed in their Dissemination 



2. General and Endemic Distribution of Plants 



3. Conjectures as to the mode in which the Earth was origin- 



ally clothed with Plants .... 



4. Distribution of Plants considered Physiognomically and 



Statistically ...... 



Physiognomy of Vegetation . 675 | Statistics of Vegetation 



5. Phyto-geographical Division of the Globe . ' . 



Latitudinal Range of Vegetation 678 

 Schouw's Phyto-geographic Re- 

 gions 679 



Meyen's Phyto-geographical Zones 692 



Altitudinal Range of Vegetation 

 jZones of Marine Vegetation . 

 Distribution of Plants in Britain 

 Acclimatising of Plants . 



Page 

 657 



657 

 658 

 662 

 662 



668 

 668 

 670 



671 



675 

 677 

 678 



695 

 699 

 702 

 716 



PART IV.— FOSSIL BOTANY . . . . .718 



Character and arrangement of Fossil I Fossiliferous Rocks . . 723 



Plants . . . . 719 I FossU Plants of different Strata 724 



1. Flora of the Primary or Palaeozoic Period . . . 728 



Reign of Acrogens ..... 728 



2. Flora of the Secondary or Mesozoic Period . . . 745 



Reign of Gymnosperms ..... 745 



3. Flora of the Tertiary or Cainozoic Period . . . 750 



Reign of Angiosperms ..... 750 



APPENDIX ........ 761 



I. — On the Use oe the Microboope in Botamioai, Reseaeches 761 



II. — On CoLLEOTma and Examtning Plakts, and on the Forma- 

 tion OE a Herbabioti ..... 795 



GLOSSARY 809 



ABBREVIATIONS AND SYMBOLS 830 



INDEX .•••■-.. 831 



