CONTENTS. 



PART FIRST. 



CHAPTER I. 

 THE PARASITIC FUNGI. 



PAGE 



§ 1. Definition of the Parasitism of Fungi, ... 2 



§ 2. Classification of Parasites and Saprophytes, - - . 3 



§ 3. Mode of Life of the Parasitic Fungi, ... 7 



CHAPTER 11. 



REACTION OF HOST TO PARASITIC ATTACK. 



§ 4. Effect of Parasitic Fungi on their Host, - - .14 



§ 5. Effect of Parasitic Fungi on the Form of the Host-Plant, 22 



§ 6. Effect of Parasitic Fungi on Cell-Contents, - - 31 



§ 7. Effect of Parasitic Fungi on the Cell-Wall, - - 36 



§ 8. Effect of Parasitic Fungi on the Tissues of their Host, 40 



CHAPTER in. 



RELATION OF PARASITE TO SUBSTRATUM. 



9. Effect of the Substratum on the Development of the 



Parasite, ------- 45 



