TABLE OF CONTENTS. XIX 



SECTION III. FUNGI ATTACKING BROAD-LEAVED TREES. 



1 . Rosellinia quercina, .......... 473 



2. Polyporus sulphurews ' . . 475 



3. Xecttia ditissima (Beech-canker) . ... . . . 477 



4. JV. clnnabarina (Coral-spot disease) . ' . . . . . 479 



5. Aglaospora taleola . . . . . . . . 481 



6. Phytophthora Fag I (Beach seedling mildew) . t . . 482 



7. Rhytisina acerinum . . . . . . . . . . 483 



8. Melamjjsora Hartlgii . . . . . . . . 485 



PART IV. 

 PROTECTION AGAINST ATMOSPHERIC INFLUENCES. 



CHAPTER I. 



PROTECTION AGAINST FROST. 

 SECTION I. FROZEN PLANT-ORGANS. 



1. External appearance 492 



2. Explanation of the action of frost on plants 492 



3. Damage done 494 



4. Register of severe frosts 502 



5. Protective measures . 502 



SECTION II. FROSTCRACK . . 505 



III. FROST-CANKER '. . .510 



IV. UPROOTING OF SEEDLINGS BY FROST 510 



CHAPTER II. 



PROTECTION AGAINST INSOLATION. 

 SECTION I. DROUGHT. 



1. Appearance and cause of injury 514 



2. Damage done 514 



3. Register of dry years . . .518 



4. Protective rules . . 519 



SECTION II. BARK-SCORCHING 522 



III. HEAT-CRACK . . 526 



