Studies of Trees - Jacob Joshua Levison - Page №122

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Effect of heat on trees, [(116)]
Elkwood, [(100)]
Elm, [(229)]
—, American, [(47)], [(50)], [(119)], [(126)]
—, Camperdown, [(50)]
—, cork, [(95)]
—, English, [(50)]
— leaf beetle, [(49)], [(141)]
—, poplar, gingko and willow trees, told by their form, [(46)]
—, white, [(50)]
Enemies of trees, [(239)]
Enemy of trees, forest fires as an [(241)]
English elm, [(50)]
— hawthorn, [(128)]
— yew, [(123)]
European beech, [(69)]
— larch, [(25)], [(122)], [(126)]
— linden, [(98)], [(119)]
— weeping birch, [(121)]
— white birch, [(68)], [(120)]

Fall webworm, [(148)]
Fagus, [(128)]
— americana, [(68)]
— sylvatica, [(69)], [(120)]
Fern, maidenhair, [(55)]
Fighting forest fires, various ways of, [(194)]
Filling cavities, manner of, [(172)]
Fire, guarding woodlands from, [(193)], [(213)], [(215)]
Flowering dogwood, [(104)], [(122)]
Foliage, spraying, [(141)]
Forest fires as an enemy of trees, [(241)]
— —, various ways of fighting, [(194)]
— lands, exemption from taxation, [(216)]
—, life and nature of, [(182)]
— trees, pruning, [(166)]
Forestry in various countries, [(198)]
—, what it is and what it does, [(179)]
Forests, grazing cattle in, a source of injury, [(196)]
Forest Service, U. S., [(200)]
—, harvesting, [(196)]
—, harvesting of, to increase production, [(180)]
—, how established, [(190)]
—, how harvested, [(197)]
—, how protected, [(193)]
—, how they help to regulate streams and prevent floods, [(187)]
—, method of establishing, [(191)]
—, planting, with seedling trees, [(189)]
— prevent soil erosion, [(187)]
—, protecting from destructive agencies, [(193)]
—, safeguarding, [(179)]
—, utilization of by-products, [(198)]
Fraxinus americana, [(35)], [(126)]
— nigra, [(35)]
Frost, effect of, on trees, [(116)]
Fungi and insects, protection against, [(196)]
— as factors of disease, [(155)]
Fungous diseases attacking cavities, [(172)]
— diseases, spraying for, [(160)]
Fungus, fruiting body of, [(156)]

Gingko biloba, [(55)], [(120)], [(124)]
— or maidenhair tree, [(55)], [(120)]
Gipsy moth, [(74)], [(143)]
Gleditsia triacanthos, [(102)]
Gloeosporium nervisequum, [(62)]
Gray or white birch, [(64)]
Grazing effect on forests, [(196)]
Grove and lawn, study of soil conditions on, [(239)]
Gum, red or sweet, [(95)], [(231)]
Gymnocladus dioicus, [(120)]

Hackberry tree, [(59)], [(70)]
Hackmatack, [(29)]
Hard maple, [(38)]
— pines, [(224)]
“Hardwoods,” or broadleaf trees, [(226)]
Hardy catalpa, [(102)]
Harvesting forests, [(196)]
Harvesting of forests to increase production, [(180)]
Hawthorn, English, [(128)]
Healthy tree, conditions which indicate, [(153)]
Heartwood, [(106)], [(219)]
Heat, effect of, on trees, [(116)]
Hemlock, [(17)], [(128)], [(225)]
— and spruce, description of, [(11)]
Hickory, [(229)]
— bark borer, [(85)], [(151)]
—, bigbud, [(87)]
—, bitternut, [(87)]
—, broom, [(87)]
—, brown, [(87)]
—, mockernut, [(44)], [(86)]
—, pignut, [(87)]
—, shagbark, [(83)]
—, shellbark, [(85)]
—, whiteheart, [(87)]
Hicoria alba, [(86)]
— glabra, [(87)]
— minima, [(87)]
— ovata, [(83)]
Honey locust, [(102)]
Hop hornbeam, [(70)]
Hornbeam, (blue beech), [(70)]
Horsechestnut, [(33)], [(120)]
—, red, [(34)], [(121)]
Humus, [(113)], [(207)]
Hydrophytes, [(111)]

Important insects, [(141)]
Improperly pruned trees, [(161)]
Indian bean, [(104)]
Individuality of trees, [(1)], [(182)], [(239)]
Insects and fungi, protection against, [(196)]
—, boring, [(22)], [(134)]
—, chewing, [(134)]
— galls, [(71)]
—, important kinds of, [(141)]
— injurious to trees, [(134)]
—, leaf-eating, [(49)]
—, methods of destroying injurious, [(134)]
—, nature, habits and influences of, [(239)]
—, sucking, [(134)]
—, the four stages, or life history of, [(140)]
Ironwood tree, [(59)], [(70)]
Italian or Lombardy poplar, [(51)], [(128)]

Japanese maple, [(122)]
— umbrella pine, [(123)]
Juglans cinerea, [(90)]
— nigra, [(87)]
Juniper, [(22)]
Juniperus communis, [(22)]
Juniperus virginiana, [(19)]

Kerosene emulsion, [(139)]
Knees, cypress, [(31)]

Larch, American, [(29)]
— and cypress, description of, [(25)]
— European, [(25)], [(122)], [(126)]
Large-toothed aspen, [(54)]
Larix europaea, [(26)], [(122)], [(126)]
Lawn and grove, study of soil conditions on, [(239)]
Lawn trees, [(119)]
— —, pruning, [(166)]
Leaf blotches, [(41)]
Leaf-eating caterpillars, [(95)]
——, insect, [(49)]
Leaves, [(107)]
—, needle-shaped, [(19)]
—, scale-like, [(19)]
—, star-shaped, [(93)]
Lenticels, [(64)], [(117)]
Leopard moth, [(39)], [(49)], [(149)]
Lesson on trees, outdoor, [(234)]
Light, influence of, on trees, [(114)]
Limbs, various methods of bracing, [(176)]
Lime-sulphur wash, [(139)]
Lime-tree, [(98)]
Linden, American, [(95)]
— borer, [(98)]
—, European, [(99)], [(119)]
Liquidambar styraciflua, [(93)]
Liriodendron, tulipifers, [(90)], [(126)], [(231)]
Location of trees, care to be exercised in, [(130)]
Locust, [(101)], [(228)]
—, black, [(100)], [(126)]
— borer, [(100)]
—, common, [(101)]
—, honey, [(102)]
— miner, [(100)]
—, yellow, [(101)]
Lombardy or Italian poplar, [(51)], [(128)]
Low juniper, [(22)]

National forests, [(200)]
Needle-shaped leaves, [(19)]
Nettle tree, [(71)]
Newark, N. J., [(242)]
Northern white cedar (arbor-vitae), [(22)]
Norway maple, [(44)], [(123)]
— spruce, [(13)]
Nursery, tree, [(132)]