INDEX 



325 



Melampyrum arvense, a partial para- 

 site, 24 

 Merulius lacrymans, 198, 216, 219 



Mycelial growths of, 42 

 Mice, Barking by, 243, 249, 300 



injuring roots, 264 

 Micella, 287 

 Micrococcus, 128 

 Mildew, see also Erysiphe 



Epiphytic character of, 42 



of Vine, 65 

 Millet-brand, 68 

 Mistletoe, Common, 25 30 



Oak, 30 



Mites, on Black Austrian pine, 140 

 Mixed woods in relation to disease, 



56 



Mock plums, 131 

 Moisture in relation to fungus -growth, 



46 



Monosticha oxystoma, 151 

 Monotropa Hypopitys, Doubtful para- 

 sitism of, 25 



Monstrosity, Difficulty of defining a, 5 

 Morbo bianco, 82 

 Moth, Pine Beauty, 175 



Nun, 218, 294 

 Moth-wither, 175 

 Mus sylvaticus, Barking by, 243 

 Mycelial nest, 189 

 Mycelium, see also Hyphse 



of fungi, 40 



Cell-sap in the, 40 



Oil or fat in the, 40 



Resting, 43 



Strandlike, 43 

 Mycorhiza, 71 

 Myxomycetes, 39 



Nectria, 89, 150, 260 



Facultative parasitism of, 47 

 cinnabarina, 96 

 Cucurbitula, 89 

 ditissima, 91, 299 



the possible cause of " blight,' 1 



3 8 

 Normal predisposition to disease, 9 



Norway maple, see Acer platanoides 

 Nostoc communis, 159 



Oak, see also Ouercus 



Aglaospora Taleola on, 99 

 Daedalea on, 206 

 Dematophora necatrix on, 82 

 Erysiphe guttata on, 70 

 Exoascus caerulescens on, 135 



Oak, Green-rot on, 42 



Hydnum diversidens on, 202 

 Nectria ditissima on, 91 

 Peziza asruginosa on, 224 

 Polyporus dryadeus on, 201 

 fomentarius on, 206 

 igniarius on, 201 

 sulphureus on, 200 

 Rosellinia on, 78 

 Sphaerella on, 88 

 Stereum hirsutum on, 205 

 Thelephora Perdix on, 203 

 Tuber on, 71 

 Oaks, Predisposition of, to top-drought, 



H 



Rupturing of the cortex of, 273 

 Oats, Puccinia coronata on, 156 



Ustilago Carbo on, 68 

 Obligative parasites, 47 

 Occlusion of wounds, 229 

 Oidium Tuckeri, 70 

 Olive, Bacterial disease of, 38 

 Oogonia of Peronosporese, 58 

 Oospores, Vitality of, 45 



of Peronosporeas, 58 

 Orchidacese, Parasitism of, 25 

 Organisms, Low, in relation to death, 6 

 Orobanchaceae, true parasites, 25 

 Orobanche, Parasitism of species of, 



25 

 Outgrowths on Alder-roots, 39 



Paraphyses, 108 



Parasite, Definition of the term, 46 



Difficulty of defining a, 23 

 Parasites, Facultative, 46 



Obligative, 46 



Partial, 24 



Pseudo, amongst cryptogams, 35 

 Parenchymatous cells scarce in wood, 



46 



Partridge wood, 203 

 Pathology, Vegetable, Development of, 



i 

 Pear, see also Pyrus 



Erysiphe guttata on, 70 



Polyporus sulphureus on, 200 



Probable bacterial disease of, 38 



Exoascus bullatus on, 133 



Stigmatea on, 88 

 Pedicularis, a partial parasite, 24 

 Perennials, Partial death of, each year, 



6 



Periderm, 225 

 Peridermium Cornui, 175 



elatinum, 179 



oblongisporium, 172 



