Part 2 — INDEX.

Absorption by roots, 49.

Absorption of energy, 23.

Absorption of light, 27.

Absorption of water, 50.

Abutilon, 183.

Acarus, 88.

Accessory buds, 259.

Acer, 214.

Acid gases, 181, 191.

Acids, 130, 136.

Acquired characters, 283.

Acrostalagmus, 238.

Action of the environment, 271.

Adaptation, 176.

Adapted races, 177.

Adonis, 220.

Adventitious buds, 224, 225, 257, 260.

Æcidium, 88, 114, 116, 187, 188, 189, 217, 223, 225, 232, 247, 252.

Aeration, 104.

Aerobic organisms, 57.

Aetiology, 89, 100.

Agaricus melleus, 115, 143, 145, 234.

Agents of disease, 113.

Aglaospora, 223.

Agriculture, 65.

Agricultural Chemistry, 2.

Ajuga, 217.

Albinism, 179, 182, 183, 186.

Alder, 207, 219.

Aleurone layer, 173.

Algae, 215.

Allium, 258.

Almond, 168.

Alnus, 214.

Aloe, 134, 161.

Alpine plants, 250, 279.

American blight, 164, 219.

American vines, 155, 169, 172.

Amides, 31.

Amoeba, 144.

Amount of energy stored, 25.

Amygdalin, 173.

Anabaena, 128.

Anaerobic bacteria, 58, 237.

Anagallis, 261.

Analyses, 65.

Analyses of waters, 58.

Anemone, 247.

Animals, 99, 108, 142, 207.

Antennaria, 232.

Anthonomos, 249.

Anthrax, 144.

Antiseptics, 162.

Ants, 232.

Aphis, 88, 109, 161, 165, 188, 213, 214, 232, 241, 253.

Aphrophora, 233.

Apogamy, 257, 261.

Aporia Crataegi, 187.

Apospory, 257, 261.

Apple, 170, 171, 187, 189, 192, 206, 217, 218, 219, 223, 226, 231, 233, 248, 249, 253, 254.

Apricot, 188, 206.

Apricots, 234.

Area of root-surface, 37, 39.

Arisarum, 188.

Aristolochia, 259.

Aroids, 113.

Arrest of growth, 246.

Arsenic, 162.

Artificial wounds, 194.

Ascomycetes, 189, 217, 269.

Ascochyta, 190.

Ash, 182, 223, 225, 251.

Asparagus, 180, 230, 251, 252.

Aspergillus, 231.

Aspergillus niger, 58.

Aspidiotus, 187.

Assimilation, 8, 21, 133, 271, 275, 277, 285, 286.

Assimilates, 274.

Atmosphere, 1, 99.

Atmospheric influences, 101.

Atrophy, 246, 247, 266.

Attractive substances, 136.

Aucuba, 264.

Autumnal colouring, 191.

Autumnal fall, 93.

Avalanches, 106.

Bacteria, 102, 133, 143, 168, 173, 176, 182, 190, 200, 216, 219, 223, 227, 231, 236, 237.

Bacteriosis, 227.

Barberry, 176.

Bark boring, 204, 205.

Bark-beetles, 205.

Barley, 176, 248.

Barrenness, 246, 249.

Bats, 244.

Bean, 188, 190, 191, 268.

Beech, 192, 222, 223, 225, 233, 240, 242, 254, 269.

Beech Miner, 208.

Bees, 142, 143, 164.

Beet, 192, 216, 219, 230.

Beet-rot, 230.

Beetles, 110, 143, 145, 205, 206, 207, 248, 254.

Berkeley, 85.

Bilberries, 116, 142, 217, 218, 248.

Biology of soil, 56, 102.

Birch, 207, 218, 224.

Birds, 108, 144, 164, 166.

Bird's-eye Maple, 224.

Black spots on leaves, 186, 189, 191.

Bladders, 218.

Blemish, 198.

Blights, 86, 104, 179.

Blisters, 230.

Blue rays, 21.

Bombyx, 187, 218.

Bordeaux mixture, 162.

Boring, 204.

Botrytis, 131, 132, 136, 175, 230, 231, 243, 288.

Boussingault, 5, 10.

Bouvardia, 260.

Bramble, 112.

Branch stumps, 194, 199.

Brand, 240.

Breeding, 78.

Briars, 113.

Broom-rapes, 265.

Browning, 122, 186, 235.

Brown spots, 186, 189, 190, 191.

Browsing, 244.

Bruchus, 248.

Bruises, 194, 203, 240, 241.

Bryony, 112.

Bryophyllum, 260.

Bud galls, 219.

Bud variations, 92, 93.

Bulb diseases, 227.

Buried objects, 211, 269.

Burning, 191.

Burning-glass effect, 192.

Burrows, 204, 205.

Burrs, 222, 223, 224.

Bursting of fruits, 227, 230.

Butterflies, 145.

Bye-products, 276.

Cabbage, 253.

Cabbage moth, 208.

Caeoma, 252.

Caesalpinia, 233.

Calcium, 272.

Calcium oxalate, 138.

Calla, 183.

Calliandra, 233.

Callus, 119, 120, 124, 139, 140, 196, 197, 199, 201, 202, 210, 241, 260, 263, 269.

Calyptospora, 116, 217.

Cambium, 120, 196, 199, 222.

Camellia, 187.

Cancer, 127.

Canker, 87, 222, 223, 241.

Capnodium, 232.

Capsella, 116, 175, 252.

Carbohydrates, 16, 17, 20, 34, 122, 184, 272, 273, 277.

Carbolic acid, 162.

Carbon, 272.

Carbon assimilation, 8, 10, 28, 106.

Carbon-bisulphide, 163.

Cardinal points, 288.

Carrot, 164.

Carpocapsa, 207.

Cast branches, 123.

Castor oil, 172.

Caterpillars, 109, 164, 207, 208, 244, 254, 259.

Cats, 164.

Cattle, 108.

Cauliflowers, 247, 250.

Causes of disease, 89, 99, 108, 159, 278, 282.

Cecidia, 212.

Cecidomyia, 182, 213, 214, 218, 219, 254.

Celery, 180, 230.

Cell contents, 168.

Cell-protoplasm, 279, 280, 290.

Cellulose, 132, 277, 286.

Celosia, 250.

Centaurea, 188.

Centhorhynchus, 219.

Cephaleuros, 188.

Cephus, 248.

Cercis, 259.

Cercospora, 190.

Cereals, 248.

Change of conditions, 78.

Charlock, 165.

Checks to disease, 166.

Chemical analysis, 32, 64, 103, 272.

Chemical antiseptics, 159.

Chemical energy, 29, 287.

Chemotactic phenomena, 72, 130, 135, 137.

Chermes, 153, 223.

Cherry, 208, 209, 231, 234, 235, 247, 248.

Chestnut, 190.

Chlorine, 181.

Chlorophyll, 19, 106, 122.

Chlorophyll action, 184, 192.

Chlorophyll corpuscles, 9, 18, 22.

Chlorosis, 122, 165, 179, 180, 181.

Chrysanthemum, 243, 252.

Chytridiaceae, 127, 136, 189, 208.

Cicada, 235.

Cicatrix, 123.

Cinchona, 168, 172, 173.

Circulation of carbon, 62.

Circulation of nitrogen, 62.

Citrus, 168.

Clasterosporium, 188, 209.

Classification of diseases, 99, 101, 120.

Claviceps, 232.

Climate, 1.

Climbing plants, 112, 113, 210.

Clostridium, 236, 237.

Clothes, 142.

Clover, 164, 187, 249, 252, 288.

Cluster-cups, 188.

Coal gas, 104, 182.

Coccideae, 164, 232.

Coccus, 223.

Coffee leaf-disease, 114, 146, 166, 169, 242.

Coleophora, 153, 206.

Coleosporium, 169.

Coleus, 192, 220.

Competition of fungi, 61.

Complex interactions, 91, 99.

Conifers, 125, 205, 223, 225, 234, 258.

Constitution, 156, 283.

Consumption, 248.

Contact irritability, 125, 135.

Contagium fluidum vivum, 183.

Contortions, 252.

Convallaria, 175.

Convolvulus, 112.

Copaifera, 234.

Copper sulphate, 162, 165.

Coppery leaves, 191.

Cork, 119, 123, 194, 199, 216, 222.

Cork wings, 217.

Corky warts, 212.

Corn, 248.

Corrosion of marble, 46.

Cossus, 206.

Cost of epidemics, 146, 147.

Cotton, 172.

Crassula, 253.

Creeping of mycelia, 142.

Crepis, 252.

Crimson spots, 189.

Cross-breeding, 266.

Cross-fertilisation, 69, 74, 77, 281.

Cross-graining, 124.

Crucifers, 219, 284.

Cryptogams, 87, 108, 111, 113.

Cuckoo-spit, 233.

Cucullate leaves, 253.

Cucumber, 219.

Cucurbitaria, 217, 243.

Cultivation of pest and host plant, 168.

Curculio, 248.

Curling, 235, 246.

Cuscuta, 134.

Cuts, 119, 143, 194.

Cuttings, 194, 198, 262, 263.

Cyanide of potassium, 165.

Cycads, 128.

Cynips, 110, 213, 219.

Cystopus, 116, 136, 175, 187, 217, 247, 252.

Cytases, 132.

Cytisus Adami, 264, 283.

Daisy, 278.

Damping off, 114, 144, 160, 229, 284.

Dandelion, 247, 252.

Daniel's researches, 283.

Dark heat rays, 27.

Darwin, 72, 125.

Dasyscypha Willkommii, 152, 223.

Death, 271, 272, 287, 290.

De Bary, 85, 151.

Deficiency of iron, 180.

Defoliation, 109, 240, 244.

Deformation, 132.

Dematium, 135.

Dematophora, 143, 145.

Denitrification, 62.

Derivation of Phytopathology, 85.

Destruction, 275.

Development of root-hairs, 40.

Dextrine, 173.

Diagnosis, 85, 89.

Diastases, 132.

Diffusion, 53.

Digestion, 133.

Digraphis, 175.

Dilophia, 188.

Dionaea, 125.

Dipsacus, 252.

Diptera, 207.

Dis-assimilation, 275, 277, 286.

Discolorations, 179, 186, 192.

Disease, 64, 91, 271, 272, 277, 287, 288, 290.

Disease dodging, 168.

Disease-fungi, 189.

Disease of organs, 119.

"Disease-proof" varieties, 168, 169, 171, 173, 177.

Disease-resisting varieties, 177.

Diseases of absorptive organs, 121.

Diseases of assimilatory organs, 119.

Diseases of bark, 120.

Diseases of cambium, 120.

Diseases of parenchyma, 120.

Diseases of respiratory organs, 119, 121.

Disintegration, 275.

Distortions, 140, 246, 251, 252, 253.

Dissemination of fungi, 142.

Division, 127.

Dodder, 113.

Dolium, 134.

Dormant buds, 224, 225, 257, 259, 260.

Double flowers, 247, 256.

Double ideals in selection, 168.

Dracaena, 192.

Drainage, 103.

Drawing, 106, 180.

Drip, 103.

Drooping, 43, 179.

Drops of water, 192.

Dropsy, 228.

Drought, 121, 183, 190, 191, 245, 248, 249.

Dry-rot, 143, 237.

Ducks, 144.

Dutrochet, 7.

Dwarfing, 246, 249.

"Dying back," 190, 240, 242, 243, 244.

Earwigs, 164, 207.

Eau Céleste, 162.

Edelfäule, 230.

Eelworms, 111, 248.

Effects of environment, 262.

Eggs of insects, 187.

Elaborated sap, 94.

Elm, 218, 224, 225, 233, 260.

Empusa, 163.

Endemic diseases, 153, 160, 166.

Endive, 180.

Endophytes, 130.

Endophytic algae, 128.

Endophytic fungi, 193.

Energy in plants, 15, 25, 287.

Engelmann, 20, 27.

Entyloma, 187.

Enzymes, 10, 130, 132, 136.

Epichloë, 218.

Epicormic shoots, 224, 257, 260.

Epidemics, 108, 109, 113, 115, 142, 153, 160, 163, 166.

Epiphytes, 113, 130, 135, 137.

Epiphytic algae, 188.

Epiphytic fungi, 161, 193, 232.

Equisetum, 113.

Ergot, 131, 142, 144.

Erineum, 88, 212, 214, 215.

Erosions, 204, 207.

Erysipheae, 135, 142, 161, 187, 268.

Essentials of fertilisation, 69.

Estimates of loss, 146.

Etiolation, 106, 179, 180, 229.

Euphorbia, 116, 134, 247, 266.

Excavations, 204.

Excess of food, 229.

Excess of minerals, 102.

Excess of water, 100.

Excessive growth, 246.

Excessive nutrition, 250.

Excrescences, 114, 212, 222.

Excreta, 45, 130, 133.

Exobasidium, 128, 218.

Exoascus, 116, 128, 188, 208, 214, 218, 225, 247, 253.

Expense of materials, 161.

Experiments necessary, 168.

Exposure of roots, 179, 184.

External causes of disease, 99.

Extinction of species, 91.

Exudations, 227.

Exudation under pressure, 51.

Factors of an epidemic, 149, 165.

Falling of fruit, 206.

Falling leaves, 123.

False chlorosis, 181.

False etiolation, 180.

Farfugium, 188.

Fasciations, 230, 246, 251.

Fats, 272, 286.

Feeding, 14, 16.

Fermentation, 58, 102, 130, 233.

Ferns, 113, 247, 260, 261.

Fertilisation, 71.

Field-mice, 164.

Figs, 113.

Finger and toe, 114, 127, 163.

Fire, 240.

Flaming, 164.

Flattened roots, 246, 252.

Fleshiness, 228.

Flies, 86, 110, 142, 143, 145.

Flux, 227, 231.

Flying foxes, 244.

Focussing of solar rays, 192.

Foliage, 110.

Fontaria, 134.

Food, 18.

Forest-fires, 241.

Formic-aldehyde, 20.

Foul products, 100.

Foxy leaves, 191.

Freezing, 121, 183.

Frit fly, 182.

Frost, 153, 160, 225, 229, 248, 249.

Frost-beds, 243.

Frost-blisters, 212, 218.

Frost canker, 222.

Frost-cracks, 204, 209, 242.

Frost-patches, 240.

Frost-ridge, 209.

Fumago, 190, 232.

Fumes, 104.

Functions of roots, 43, 45.

Functional depression, 96.

Fungi, 89, 108, 143, 174, 189, 200, 205, 207, 208, 212, 216, 219, 223, 229, 231, 233, 238, 240, 241, 243, 248, 251, 255, 258, 265, 267, 283, 284, 288.

Fungus attacks, 139.

Fungus galls, 219.

Fusarium, 143, 238.

Fusicladium, 189.

Fusisporium, 237.

Gagea, 258.

Gall-apple, 218.

Gall-flies, 219.

Gall-insect, 139.

Gall-like swellings, 128.

Galls, 86, 110, 120, 130, 138, 212, 214, 218, 255.

Gangrene, 231.

Garreya, 264.

Gas, 160.

Gases in soil, 104.

Gastropacha, 225.

Gelatine, 163.

General death, 116.

General disease, 119, 120.

Germ-plasm, 267.

Gesneria, 260.

Glechoma, 218.

Gloeosporium, 189, 190, 208.

Gloxinia, 260.

Goats, 164.

Gooseberry, 217.

Graft-hybrids, 262, 267, 271, 283.

Grafting, 78, 155, 169, 183, 250, 262, 271, 281.

Grain-rust, 146.

Grapes, 192, 230, 231.

Grapholitha, 109, 207.

Grass, 111, 189, 190, 205, 218, 233.

Green fly, 161.

Grew, 85.

Greyish spots, 187.

Growth, 271, 274, 275, 286.

Grubs, 110, 207.

Gumming, 235.

Gummosis, 227, 234, 235.

Gymnosporangium, 114, 176, 223.

Hail, 106, 240, 241.

Hales, 85.

Haltica, 209.

Hardy varieties, 168, 170, 177.

Haustoria, 134, 135, 136.

Healing, 194, 196.

Healing by cork, 123.

Health, 272, 287.

Health and disease, 91, 97, 287.

Heliotropism, 126.

Hemileia, 146, 169.

Heredity, 72, 283.

Herpotrichia, 135, 190.

Hessian Fly, 182.

Heterodora, 219, 220.

Hieracium, 112.

History of Phytopathology, 85.

Holdfast of roots, 42.

Hollyhock disease, 143.

Holly, 217.

Honey dew, 144, 227, 232, 233.

Hops, 162, 187, 191, 232, 253.

Hop-aphis, 146.

Hop-disease, 166.

Hop mildew, 161.

Hormomyia, 219.

Hornbeam, 224, 233, 242.

Horse-radish, 260.

Host, 284, 285.

Hyacinth, 231, 261.

Hyacinth disease, 143.

Hybrids, 69, 156, 281.

Hybridisation, 69, 75, 169, 266, 281.

Hydrochloric acid, 181.

Hydrogen, 272.

Hymenomycetes, 206.

Hypertrophy, 119, 127, 139, 213, 215, 247, 266.

Hypochaeris, 112.

Hypomyces, 237.

Hyponomeuta, 254.

Ice, 184, 209.

Ichneumon-flies, 165.

Icterus, 181.

Illegitimate unions, 265.

Immunity, 155, 156, 165, 168, 169.

Impervious subsoil, 181.

Inarching, 269.

Increase in dry weight, 23.

Indian agriculture, 172.

Indian wheats, 168.

Indispensability of elements, 278.

Infection, 262, 265, 267.

Ingredients of protoplasm, 272.

Insect bites, 225.

Insect diseases, 145, 146, 154, 189.

Insect punctures, 88.

Insects, 89, 98, 108, 109, 120, 138, 142, 153, 174, 187, 194, 203, 205, 206, 207, 208, 212, 223, 229, 241, 244, 248, 251, 254, 255, 258, 259, 269.

Insolation, 180, 242.

Intercellular endophytes, 136, 137.

Intercellular mycelium, 128.

Interference, 91.

Internal causes of disease, 99, 101.

Intracellular parasites, 127, 136.

Intramolecular respiration, 277.

Intumescences, 212, 215.

Inulin, 11, 17.

Invertebrata, 108.

Irritability, 125, 127.

Irritation, 119, 139.

Isaria, 163.

Ivy, 113, 165.

Japanese trees, 250.

Jerusalem Artichoke, 264.

Juncus, 219.

Juniper, 114.

Kidney bean, 192.

Knauers, 223.

Knife wounds, 194, 195.

Labour, 161.

Lace-wings, 165.

Lachnus, 223.

Lady-birds, 164, 165.

Lammas shoots, 257, 259.

Larch, 168, 171.

Larch disease, 115, 149, 152, 166, 171, 223, 241.

Larvae, 110.

Lateral wounds, 132.

Lawns, 112.

Laying of wheat, 179, 180.

Leaf-curl, 236, 253.

Leaf-diseases, 114, 119, 120, 242.

Leaf-galls, 217, 218.

Leaf-miner, 86, 109, 204.

Leaf perforations, 208.

Leaf rolling, 214, 246, 254.

Leaf-spots, 114, 190.

Leguminoseae, 137, 219.

Lemons, 235.

Lenticels, 217.

Lepidoptera, 187.

Leptosphaeria, 249.

Lichens, 137.

Liebig, 4.

Life, 271, 285, 287.

Life and death, 271.

Light, 27, 106.

Lily disease, 143.

Lime, 163, 215, 218, 232, 253, 254, 260, 269.

Limes, 172.

Limits of variation, 287.

Linaria, 252.

Liquid antiseptics, 160, 161, 162.

Living environment, 99, 108.

Local action, 114.

Local disease, 119, 121.

Locusts, 109, 145, 163, 164.

Longicorns, 205.

Loranthus, 113, 245, 265.

Losses due to epidemics, 142.

Lowering of temperature, 100.

Lucerne, 249.

Lurking parasites, 142, 145.

Lychnis, 232.

Lyonetra, 206.

Lysimachia, 217.

Machine, plant compared to a, 79.

Magnesium, 272.

Maize, 116, 173, 219, 267.

Majanthemum, 175.

Malformations, 116, 130, 131, 246, 251.

Mal nero, 190.

Mallow, 252.

Malpighi, 85.

Mammals, 142.

Man and plants, 108, 142, 143.

Manna, 227, 235.

Manna Ash, 235.

Maple, 259.

Maximum, 288.

Maximum absorption, 19.

Maximum assimilation, 19.

Maximum temperature, 105.

Mealy bug, 164.

Melampsora, 176.

Melon, 220.

Messmates, 63.

Metabolic products, 274.

Metabolism, 23, 127, 271.

Metabolites, 278.

Metallic compounds, 162.

Mice, 108, 163.

Microbes, 227.

Micro-organisms, 183.

Mildew, 86, 164.

Millardet, 169.

Mineral salts, 101.

Miniature trees, 250.

Minimum, 288.

Minimum temperature, 105.

Misconceptions, 12.

Mistletoe, 113, 265.

Mites, 192, 214, 255.

Mixed species, 166.

Molecular structure of protoplasm, 273, 274.

Mongrel forms, 74.

Monilia, 217, 231.

Monstrosities, 246.

Moraine plants, 250.

Moths, 110, 145, 206.

Moulds, 230, 231, 237, 243.

Mucor, 230, 231.

Mulberry, 244.

Mutilations, 252.

Mycelial strands, 145.

Mycelium, 188.

Mycocecidia, 219.

Mycorrhiza, 137.

Myrtaceae, 258.

Mytilaspis, 187.

Natural checks, 159.

Natural demise, 91, 93.

Natural Grafts, 269.

Natural Selection, 72, 99, 167, 286.

Natural Wounds, 204.

Nature of soil, 57.

Necrosis, 240, 241, 243.

Nectria, 145, 217, 223, 241, 243, 269.

Nematodes, 111, 134, 139, 219, 220.

Nettle, 116, 252.

Neurotus, 219.

New formations, 255.

Nitrate, 273.

Nitrification, 62, 102.

Nitrogen, 272.

Nodosities, 219.

Nodules on roots, 63, 137.

Non-living environment, 99.

Notommata, 140.

Nuclear fusion, 267.

Nuclear protoplasm, 271, 279, 280, 290.

Nuclear substance, 71.

Nucleo-plasm, 280.

Nuts, 248.

Oak, 110, 188, 215, 218, 219, 223, 233.

Oak leaf-roller, 254.

Oat, 176.

Occlusion, 200, 201, 222, 223.

Odours, 144.

Œdema, 228.

Olive, 223.

Onion, 231.

Oniscus, 182.

Oospora, 216.

Optimum temperature, 105, 288.

Orange, 173, 187, 235, 247.

Orange-coloured spots, 187.

Orchard trees, 163.

Orchestes, 206.

Orchids, 113, 266.

Organic acids, 50.

Organisation, 89.

Organised structure, 13.

Organisms in soil, 60.

Orobanche, 112.

Osmosis, 26, 29, 46.

Osmotic pressures, 18, 41, 52.

Over-crowding, 104, 111.

Over-feeding, 102.

Over-watering, 97.

Oxalic acid, 134, 136.

Oxidation, 124.

Oxygen, 104, 272.

Oxygen-respiration, 12, 64.

Pallor, 179, 180.

Palms, 192.

Pangium, 134, 165.

Parasites, 61, 113, 119, 130, 139, 174, 187, 230, 265, 269, 284.

Parasitic algae, 188, 217, 219.

Parasitic bacteria, 163.

Parasitic diseases, 88, 119, 121.

Parasitic epiphyte, 136.

Parasitic fungi, 87, 97.

Parasitism, 262, 264, 268, 271.

Paris, 175.

"Paris green," 162.

Parti-coloured leaves, 191.

Parti-coloured spots, 186.

Pasture grasses, 69.

Pathology, 121, 257.

Pathology of cell, 119.

Pathological conditions, 168, 170, 246.

Pea, 190, 191, 206, 208, 248, 268.

Peach, 170, 253.

Pear, 179, 187, 189, 191, 216, 218, 231, 240, 248, 249, 253, 257.

Pedigree wheats, 69.

Pelargonium, 198, 253.

Peloria, 252.

Penicillium, 231.

Peridermium Pini, 223, 234.

Periola, 238.

Permanganate, 162.

Peronospora, 136, 160, 175, 187, 189, 208.

Petasites, 188.

Petroleum, 162.

Peziza, 115, 144, 152.

Phanerogams, 108, 111.

Phellomyces, 238.

Phoma, 217, 243.

Phosphorus, 272.

Photo-synthesis, 11, 16.

Phragmidium, 189.

Phyllachora, 189.

Phyllereum, 253.

Phyllobium, 217.

Phyllosiphon, 188.

Phyllosticta, 188, 209.

Phylloxera, 110, 145, 149, 154, 155, 163, 166, 172, 188, 219, 220, 268.

Physiology, 1, 66, 85.

Physiological diseases, 119, 121.

Phytomyza, 206.

Phytopathology, 85.

Phytophthora, 115, 136, 144, 150, 151, 235, 236.

Phytophysa, 219.

Phytoptus, 189, 213, 214, 215, 218, 219, 253, 254.

Pilea, 219.

Pilobolus, 126, 140.

Pines, 183, 223, 234, 251, 252.

Pine-apple, 258.

Pith flecks, 204, 207.

Plant as agent of disease, 99, 108.

Plant, agricultural chemistry of, 1.

Plant and its food, 7.

Plant and its surroundings, 1.

Plant, a machine, 1, 15.

Plant, central object of study, 1.

Plant, physiology, 1.

Plantago, 257.

Plantain, 112, 257.

Plants, dying out of, 93.

Plasmodia, 163.

Plasmodiophora, 114, 126, 127, 144, 163, 219, 284, 285.

Plasmolysis, 47.

Pleospora, 236.

Pleotrachelus, 126, 140.

Plum, 171, 189, 192, 209, 214, 206, 231, 235, 248, 249, 260.

Poa, 258.

Pocket-like galls, 155, 214, 218.

Pocket-plums, 214.

Pockets, 253.

Poison, 102, 130, 136, 163, 216.

Poisonous gases, 181, 248.

Pollen grain, 288.

Pollination, 248, 262, 265, 266, 271.

Polydesmus, 236.

Polygonatum, 175.

Polygonum, 258.

Polymorphism, 174.

Polyporei, 142.

Polyporus, 143, 206.

Polystigma, 189.

Poplar, 188, 206, 215, 218, 254.

Post and epidemics, 142.

Potassium, 272.

Potassium sulphite, 162.

Potato, 162, 171, 194, 209, 216, 236, 237, 258.

Potato-disease, 114, 143, 149, 150, 166, 189, 207, 235.

Powders, antiseptic, 159, 160, 161.

Predisposition to disease, 98, 99, 105, 168, 169, 229, 262, 268, 277, 278, 282.

Preventible diseases, 159.

Preventitious buds, 259.

Prolepsis, 257, 259.

Proliferations, 257, 258.

Properties of soil, 57.

Prophylactic measures, 160.

Proteids, 132, 138, 272, 277, 286.

Proteolytic enzymes, 132.

Protomyces, 217.

Protoplasmic molecules, 276, 278, 286.

Protoplasm, 33, 41, 271, 272, 274, 276.

Pruning, 105, 143, 194, 225, 250.

Prussic acid, 163, 165, 173.

Psylla, 253.

Puccinia, 88, 114, 169, 175, 176, 188, 189, 247, 252.

Puckers, 214, 235, 246, 253.

Puffing of spores, 142, 144.

Punctures, 212.

Pure culture, 166.

Purple-black spots, 191.

Pustules, 188, 190, 212, 217.

Putrefaction, 234.

Pyrethrum, 161.

Pyrus, 214.

Pythium, 114, 119, 136, 144, 160, 230.

Quassia, 161.

Quinine, 173.

Rabbits, 108, 142, 164, 194.

Rain trees, 233.

Rankness, 97, 227, 228.

Rats, 108, 163.

Rays of light, 18.

Red light, 21.

Red spider, 161, 187, 188, 192.

Red spots, 188, 253.

References in Bible, 85.

Remedial measures, 89.

Repellent substances, 136.

Reproduction, 72, 281.

Reserves, 274.

Resin, 125.

Resin-flux, 234.

Resinosis, 227, 234.

Resistance to disease, 155, 268.

Resistant races, 172.

Respiration, 17, 31, 130, 271, 275, 276, 285, 287.

Reversions, 73.

Rhinanthoideae, 265.

Rhinanthus, 112.

Rhizobium, 289.

Rhizoctonia, 238.

Rhizomorph, 145.

Rhododendron, 218.

Rhubarb, 180, 230.

Rhynchitis, 254.

Rhytisma, 188.

Ribbon grass, 183.

Ribes, 214.

Rice, 172.

Rimpau's experiments, 69, 73, 77.

Ringing, 194, 201, 202, 210.

Ripened wood, 243.

Robinia, 259.

Rodents, 109.

Roestelia, 217.

Rolled leaves, 86.

Root, 9, 35, 96, 120, 227, 270.

Root-absorption, 181.

Root-diseases, 119, 120.

Root-excretions, 46.

Root-fusions, 262.

Root-galls, 221.

Root-hairs, 34, 102, 163.

Root-nodules, 212, 219.

Root-parasites, 112, 265.

Root-rot, 230.

Roses, 232, 243, 257, 268, 278.

Rosettes, 225.

Rot, 97, 182, 227, 229, 231, 236.

Rotation of crops, 69, 166.

Rotifer, 140.

Rot-organisms, 200.

Rotting of wounds, 87.

Rouen law, 85.

Rushes, 114.

Rust, 122, 142, 171, 172, 175, 191.

Rye, 176, 248.

Saccharomyces, 60.

Sachs, 7, 36.

Salvia, 214.

San José scale, 187.

Sand-blast action, 184.

Sandy soils, 184.

Saperda, 205.

Saprophytes, 135, 137, 175, 234, 243, 244.

Scab, 189, 216.

Scale, 187.

Schinzia, 114.

Schizoneura, 223.

Scion, 183, 262, 264, 266, 282.

Scleroderris, 223.

Sclerotia, 143.

Schwarz, 39.

Sclerotinia, 142, 143, 144, 231, 248, 249, 288.

Scolytidae, 205.

Scorching, 240, 241.

Scurf, 216.

Sea-kale, 261.

Secale, 76.

Secretions, 130, 133, 173, 274.

Sedges, 189.

Seedless grapes, 247.

Selandria, 208.

Selection, 69, 74, 78, 169.

Selective absorption, 53, 65.

Self-fertilisation, 281.

Semi-parasites, 112.

Senecio, 188.

Sensitive plant, 125.

Septoria, 114, 187.

Sewage waters, 59.

Sexual act, 72.

Shaded foliage, 113.

Shanking, 246, 249.

Shoots from old wood, 260.

Shot holes, 204, 208, 209.

Silver fir, 224.

Silver leaf, 192.

Sirex, 206.

Skeleton leaves, 204, 207.

Slime flux, 227, 233.

Slime fungus, 219.

Slugs, 111, 164, 207, 269.

Smut, 117, 143, 162, 190.

Snails, 111, 142, 207.

Snow, 106.

Soap, as insecticide, 161.

Soil, 1, 42, 99, 102, 142, 163.

Soil-bacteria, 60.

Soil-filtration, 59.

Soil-organisms, 61, 143.

Solar energy, 135.

Somato-plasm, 267.

Sooty moulds, 135, 190, 232.

Sorbus, 207.

Sorosporium, 216.

Sour-rot, 231.

Sparrows, 164.

Specialised races, 168, 176.

Specific predisposition, 155.

Spectrum, 19, 21, 26.

Spermogonia, 144, 232.

Sphaerella, 189.

Sphaerotheca, 187.

Sphaeroblasts, 222, 225.

Spicaria, 237.

Spiral grooving, 204, 210.

Spiral growth, 252.

Spongospora, 216.

Spontaneous variations, 78, 246, 255.

Spores, 144.

Sports, 93, 247.

Spots on leaves, 120, 186.

Spraying, 159, 161, 162.

Spreading of disease, 142.

Squirrels, 108.

Stag-head, 240, 244.

Starch, 9, 16, 17, 20, 23, 138, 173.

Statistics of epidemics, 147.

Steeping, 161.

Stem diseases, 120.

Stereum, 206.

Sterility of soil, 61.

Stimulation, 119.

Stimuli, 126, 127, 139.

Stock, 262, 264, 266, 282.

Stomata, 23.

Stool-shoots, 201, 225, 269.

Stool stumps, 194, 201.

Strangulations, 204, 209.

Strawberry, 189, 257.

Stripping, 194, 197.

Stroma, 217.

Structure, 274.

Structure of protoplasm, 271.

Structure of root-hairs, 40.

Struggle for existence, 105, 159, 164, 165, 167, 286.

Study of causes, 85.

Stumps, 194.

Subsoil, 57, 103.

Substitutive selections, 286.

Suckers, 225, 260.

Sugar, 11, 17, 20, 173, 286.

Sugar cane, 172.

Sugar cane disease, 166.

Sulphate, 273.

Sulphur, 161, 163, 272.

Sulphurous acid, 181.

Sun-burn, 240, 241.

Sun-cracks, 240, 242.

Sundew, 232.

Sunflower, 256, 264.

Sun-spots, 192.

Superstitions, 85.

Surface energy, 26.

Surface roots, 112.

Sweet almond, 173.

Symbiosis, 63, 130, 137, 219, 263, 265, 268, 285.

Symptoms of disease, 89, 122, 179, 186.

Synchytrium, 127, 188, 217, 247.

Synthesis, 65.

Syringa, 259.

Syringing, 161, 164.

Tamarisk, 235.

Tannin, 138.

Taphrina, 218.

Tar, 164.

Tea, 244.

Teazel, 252.

Teleutospore, 189, 191.

Temperature, 99, 105.

Tendencies to ill-health, 91.

Tendrils, 125.

Teratology, 246, 253, 254, 257.

Tetraneura, 218.

Tetranychus, 187, 192.

Thawing, 183.

Thelephora, 206.

Therapeutics, 85, 89, 159.

Thermotropism, 126.

Thesium, 112.

Thick-skinned organs, 168, 171.

Thinning, 96, 105.

Thistle, 247.

Thrips, 88, 191, 208.

Thyloses, 125.

Tilia, 214.

Timber diseases, 119, 120.

Timiriazeff, 21.

Tinea, 206.

Tissue diseases, 119.

Tobacco, 209.

Tobacco powder, 161.

Tomato, 171, 219, 230.

Top-dry trees, 244.

Topical remedies, 161.

Tomicus, 205.

Torsions, 246, 252.

Tortrix, 254.

Toxic agents, 130.

Transformation of energy, 25, 28.

Transformation of organs, 254, 255.

Transmission of acquired characters, 264, 283, 290.

Transplanting, 96.

Transpiration, 181, 228.

Trees, 109.

Trichosphaeria, 135.

Triticum, 76.

Tumescence, 227, 228.

Tunnels, 206.

Turgescence, 47, 228, 230.

Turnip, 126, 162, 230.

Twitch, 113.

Tylenchus, 238, 248.

Ulcer, 231.

Unger, 85.

Unsuitable soils, 101.

Upheaval of seedlings, 179, 183.

Uredineae, 114, 134, 136, 145, 169, 188, 189.

Uredo, 88, 188, 191.

Uredospores, 191.

Uromyces, 116, 188, 191, 266.

Urocystis, 220.

Ustilagineae, 145, 190, 217, 248.

Ustilago, 116, 117, 175, 190, 219, 255.

Vaccinium, 128, 288.

Variability, 174.

Variation, 67, 72, 91, 92, 168, 174, 176, 246, 262, 263, 264, 271, 282, 286, 288, 289.

Variegation, 179, 182, 183, 192.

Varieties, 78, 247.

Varieties of soil, 56.

Vaucheria, 139, 140.

Vegetable acids, 48.

Vertebrata, 108.

Verticillium, 145, 236.

Viburnum, 214.

Vine, 110, 149, 156, 162, 164, 169, 171, 189, 190, 191, 222, 248, 268.

Vine disease, 143.

Vivipary, 257, 258.

Walnut, 190, 209, 253.

Want of air, 100.

Washing leaves, etc., 161.

Wasp-flies, 165.

Wasps, 145.

Water, 272.

Water and insects, 161.

Water-culture, 65.

Water in soil, 103.

Waterlogging, 181.

Weaving of fungi, 190.

Webs, 190, 254.

Weeding, 105.

Weeds, 69, 111, 113, 165, 229, 249.

Weevils, 248.

Wet feet, 181.

Wheat, 169, 171, 172, 176, 179, 180, 182, 183, 230, 248.

Wheat rust, 86, 122, 146, 166, 169, 176.

White spots, 186, 187.

Willow, 206, 207, 219, 223, 233, 259.

Willow beetle, 208.

Wilting, 179, 181, 235, 249.

Wind, 106, 142, 144, 153, 184, 209, 229.

Wire-worms, 109, 181.

Witches' brooms, 116, 222, 224.

Wood, 124.

Wood-ashes, 161.

Woodbine, 112, 210.

Wood-boring, 204, 205.

Woodlice, 164.

Wood-nodules, 225.

Wood-wasps, 206.

Woolly-aphis, 219, 223.

Worms, 109, 142, 144, 194, 238.

Wounds, 108, 139, 194, 204, 207, 213, 260, 263, 269.

Wound-cork, 195.

Wound-fever, 123.

Wound-fungi, 203, 204, 240.

Wound-gum, 125.

Wound-wood, 124.

Wrens, 165.

Wrinkling, 253.

Xenia, 267.

Xyloma, 88.

Yeasts, 134, 172, 231, 233.

Yellowing, 179, 181, 182, 184.

Yellow leaves, 89.

Yellow spots, 186, 187, 188, 253.

Zoospores, 151.

GLASGOW: PRINTED AT THE UNIVERSITY PRESS BY ROBERT MACLEHOSE AND CO.