CONTENTS XV 



PAGE 



Black-specked leaf-spot 225 



Leaf-spots 226 



Powdery mildews 227 



Leaf-blight . . 228 



Canker 229 



Wilt 231 



Common white wood-rot 232 



Brown checked wood-rot 232 



White strand wood-rot 233 



Uniform white sapwood-rot 234 



White streaked sapwood-rot 235 



White butt-rot 236 



CHAPTER XXVI 



Oak Diseases 237 



Leaf-blight 237 



Leaf-bUster 239 



Powdery mildews 241 



Brown mildew 243 



Large leaf-spot 243 



Twig-blight 244 



StrmneUa canker 245 



Brown checked wood-rot 247 



Common white wood-rot 250 



White pocket heartwood-rot 250 



String and ray butt-rot 252 



Wet heartwood-rot 254 



Honeycomb heartwood-rot 255 



Soft heartwood-rot .' . 257 



White piped butt-rot 258 



Straw-colored butt-rot 259 



White wood-rot 260 



White butt-rot 260 



White root-rot 261 



CHAPTER XXVn 



Pine Diseases 264 



Seedling root-rot 264 



