TABLE OF CONTENTS. XIX 



PAGE 



Section III. — Fungi attackino Broad-leaved Treks. 



1. ItoselUma quercitui 473 



2. Pulijporus sulj>hurem 47."> 



8. Xectria ditmima (Beech-cankov) 477 



4 . y, c'uiimharlna (Coral-spot disease) 471) 



f). Aijlaospora taleolu .......... 481 



<!. Pliytuphthom Fagi (Beach sccdliug mildew) 482 



7. lihijtisma acerinuiii, . . . . ^ 483 



8. Melampaora Hartlgii 485 



PART IV. 



PROTECTION AOAINST x\.Tx\IOSPaERIC INFLUENCES. 



CHAPTER I. 



I'KOTECTION AGAINST FUOST. . 

 Section I.— Frozen Plant-Organs. 



1. Exterual 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 



,, 1II.--FROST-CANKER 510 



„ IV.— Uprooting of Seedlings by Frost 510 



CHAPTER II. 



PKOTECTION AGAINST INSOLATION. 

 Section I.— Drought, 



1. Appearance and cause of injury 514 



2. Damage done 514 



3. Ivegistcr of dry yeai-s 518 



4. Protective rules . .......... 519 



Section II. — Bark-Scokching 522 



III.— Heat-cback 520 



