TABLE OF CONTENTS. 



Chapter. p^ge 

 . I. The Essentials for Study. What are Fungi? 3 



II. Black -Rot of Grapes 8 



III. Experiments in the Treatment of Black-Rot 



of Grapes 21 . 



IV. Bitter-Rot. White-Rot 37 



V. Brown-Rot 45 



YI. The Powdery Mildew of the Vine 55 



VII. Grape Leaf Blight 60 



VIII. Root-Rot of the Vine 64 



IX. Anthracnose and Birds-Eye Rot 72 



X. Dotted or Speckled Anthracnose of the Vine 77 



XI. Black-Rot of the Apple 81 



XIL Apple Rust and Cedar Apples 84 



XIII. Apple Scab 90 



XIV. Pear Sc b 97 



XV. TheEntomosporiuraof thePearandOuince 101 



XVI. Plum Rot or the Monilia of Fruit...." lO" 



XVII Black-Knot of the Plum and Cherry Ill 



XVIII. Leaf -Spot Disease of the Plum and Cherry 119 



XIX. Powdery Mildew of the Cherry 122 



XX. Peach Leaf Curl 126 



XXI. Fungus of the Raspberry Anthracnose 131 



ILLUSTRATIONS. 



Effect of black-rot fungus on the grape^ leaf— Grape 

 berries destroyed by Black-rot— The mycelium of the 

 Black-rot fungus— Vertical section of a pustule, greatly 

 magnified— Magnified view of Black-rot fungus as seen 

 In grape leaf— Stylospores germinating— Spermatia - 

 Mode of spraying vines- Portion of vine attacked by 

 Black-rot and not treated— Portion of vine treated with 

 the Bordeaux mixture— Fungus of Bitter-rot— Spores of 

 Bitter-rot attached to their pedicels— Fungus of White- 

 rot— Spores of White-rot germinating— Spores of White 

 rot attached to their pedicels— Mycelial threads of the 

 Downy Mildew, seen in the tissue of the berry— Grape 

 berries attacked byBrown-rot —Powder bellows— Agari- 

 cus melleus — Vine root affected with Pourridle— Spore- 

 bearing fruiting stalks of Dematophora necatrix— Col- 

 orless mycelial filaments of Dematophora necatrix— 

 Piece of foot killed by the Dematophora— Birds-eye-rot 

 of grapes— Vertical section of pustule in apple Black- 

 rot— Spores of Apple Rust and cedar apples— Fragment 

 of diseased apple leaf— Cedar apple— Apple-scab— Fun- 

 gus of Apple-scab— A young pear affected by Pear-scab 

 —Section of portion of pear-leaf showing fungus growth 

 —Leaves of quince and pear attacked by Blight— Crack- 

 ing of the pear caused by Entomosporlum— Fungus of 

 Pear-leaf Blight and Quince-leaf Blight— Black-knot of 

 plum and cherry— Leaf-spot disease of the cherry- 

 Magnified section of cherry leaf showing fungus— Pow- 

 dery Mildew of the cherry— Mycelium of the Peach-leaf 

 Curl fungus— Peach-leaf Curl. Diseased shoot and leaf 

 — Raspberry Anthracnose. Diseased raspberry cane. 



