THE DISEASES DESCRIBED IN THIS 

 VOLUME CLASSIFIED ACCORDING TO 

 THE PLANT, AND PART OF THE PLANT, 

 ATTACKED 



The number placed after the name of a disease refers to the page in 

 the text-book where a description will be found. 



Abies 



1. The seedlings droop and die : Phytophthora omnivora, 58. 



2. Young plants in the nursery become yellow or die, the stems 

 contracting suddenly close to the surface of the ground : Pestalozzia 

 Hartigii, 136. 



3. Young plants are enveloped by a brown fungus : Thelephora 

 ladniata, 35. 



4. The leaves bear numerous columnar aecidia on their under 

 surface: Melampsora Goeppertiana, 161. 



5. The leaves display long sporogenous layers on their under 

 surface. These rupture and emit yellow spores : Cceoma Abietis 

 pectinate, 184. 



6. The leaves, whicn are deformed, are pale yellow, and bear 

 aecidia. The branches form witches' brooms : sEtidium elatinum, 179. 



7. The leaves are yellowish brown, while, on the under side, the 

 mid-rib bears a black longitudinal ridge : Hysterium nervisequium, 108. 



8. The leaves are yellow, and remain attached to the branch by 

 being enveloped in white mycelial filaments : Trichosphczria parasitica, 

 72. 



9. The branch or stem shows a spheroidal swelling : ALcidimn 

 elatinum, 179. 



10. The branches bear mistletoe, or the stem shows perforations : 

 Viscum, 25. 



X 



