Chapter Ix.--Some Reasons for Plant Migration.

53. Plants are not charitable beings . . . . . . . . . . . . . . 84 54. Plants migrate to improve their condition . . . . . . . . . 85 55. Fruit grown in a new country is often fair . . . . . . . . . 85 56. Much remains to be discovered . . . . . . . . . . . . . . . 86

BIBLIOGRAPHY . . . . . . . . . . . . . . . . . . . . . . . . . . 89

SEED DISPERSAL.