CONTENTS 



CHAP. PAGE 



Pbefacb V 



I The Desert Climate 1 



II The Soil and Watercourses .... 36 



III The Floral Environment 63 



IV Animals and the Physical Environment . 64 

 ^ V Animals and the Physical Environment (contd.) 81 



VI Relations between Animals and Plants . . 122 



VII Colours of Desert Animals . . . . 140 



iz 



