CHAPTER XIII. 



THE DISEASES OF FRUIT-BEARING PLANTS. 



§ I. GENERAL OESEEVATIOXS BERKELEY'S THEORY OF CLASSIFICATION 



AVEIGJIANN CAUSES OF DISEASE INSECTS. §11. DISEASES OF 



THE APPLE OF THE LEAF FALL OF THE LEAF FUNGI — CLAD08 



POKIUM DENDEITICUM, CERATITES, RAESTELIA INSECTS APPLE- 

 TREE LOUSE, COMMON APPLE-TREE CATERPILLAR, THE OAK-TREE CAT- 

 ERPILLAR, THE VAPORER MOTH, THE PALMER WORM, THE HAG MOTH, 



* THE UNICORN MOTH, THE CANKER WORM, THE HANDMAID MOTH, THE 

 DOTTED APPLE-LEAF WORM; OF THE FRUIT AND FLOWER STERIL- 

 ITY IMMATURITY OF THE FRUIT INSECTS THE SAW-FLY, THE 



MIDGE, THE CODLING MOTH, THE ROSE-BUG ; OF THE STEM INSECTS 



THE GOAT MOTH, THE COMMON EORRR, ROOT-BLIGHT INSECT, THE 



SNAPPING BEETLE, THE BARK LOUSE, THE LOCUST OF THE SEVEN- 

 TEENTH year; OP THE TREE GENERALLY — PROFUSION OF SAP, 

 HUNGER, STAGNATION FROM TRANSPLANTATION, CANKER, FREEZING, 

 SPLITTING, WIND SHAKES, DROPSY, SUN-STROKES, WOUNDS, LICHENS, 



VITIATION OF THE SAP. § III. DISEASES OF THE PEAR OF THE 



LEAF AMERICAN PEAR BLIGHT — INSECTS THE GOLDSMITH BEETLE, 



THE RED MITE, THE FLY, THE LYDA, THE ASTYAGES, THE HISPA 

 QUADRATA, FUNGI, DISCOLORATIONS ; OF THE FRUIT AND FLOWFR — 

 ROTTING AT THE CORE, INDURATION, LOSS OF BLOOM, ETC. ; OF THE 



STEM ROOT BLIGHT — INSECTS THE BLIGHT BEETLE, THE BARK 



LOUSE, FUNGI, ETC. § IV. DISEASES OF THE PEACH THE DOTTED 



APPLE'LEAF WORM, PREMATURE FALL OF THE FRUIT, THE BORER, 

 GUMMING, ETC. § V. DISEASES OF THE PLUJI — PLUM LOUSE, CUR- 



CULIO, THE PLUM WART, ETC. § VI. DISEASES OF THE CHERRY THE 



LOUSE, THE MAY BEETLE, ETC. § VII. DISEASES OF THE GOOSEBERRY 



THE CATERPILLAR, THE SWALLOW-TAILED MOTH, THE MIDGE, THE 



MILDEW, ETC. § VIII. DISEASES OF THE CURRANT FALL OF THE 



LEAF, THE BORER, ETC. § IX. DISEASES OF THE RASPBERRY THE 



GRUB, ETC. § X. DISEASES OF THE VINE — OF THE LEAF — INSECTS 

 THE VINE PLUME, THE SAW-FLY, THE ANOMOLA VITIS, THE SPOTTED 



