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CONTENTS OF HALF-VOLUME IV. 



LIST OF ILLUSTRATIONS. 



PAGE 



Plate XV. Frondose and Fruticose Lichens, - - - to face 694 



„ XVL Eucalyptus Grove and Grass-trees in Australia, - - 730 

 Illustrations in the Text — Fig. 367 to Fig. 482. 



The History of Species {Continued). 



2. Alteration in the Form of Species {Continued) — 



The Influence of Mutilation on the Form of Plants, - - - - - 514 



Alteration of Form by Parasitic Fungi, - 518 



Alteration of Form by Gall-producing Insects, - - - - - - 527 



The Genesis of New Forms as a result of Grossing, 554 



3. The Origin of Species — 



The Genesis of New Species, - - -576 



Derivation of Existing Species, ---..-.. 595 



The Subdivisions of the Vegetable Kingdom, ------ 600 



4. The Distribution of Species — 



The Distribution of Species by Offshoots, .--..- 790 



The Dispersion of Species by Means of Fruits and Seeds, - - - - 833 



Limits of Distribution, ----- 878 



Plant Communities and Floras, ----..-. 885 



5. The Extinction of Species, - - - 899 



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I_; OF- 



DEPART. .-^ BOXANV 



