Studies of Trees - Jacob Joshua Levison

Oak, [(226)]
—, black, [(75)]
—, pin, [(79)], [(119)], [(125)]
—, red, [(76)], [(124)], [(126)]
—, scarlet, [(76)]
—, swamp white, [(74)]
—, white, [(72)]
—, yellow, [(76)]
Oaks and chestnut, [(71)]
Observations about trees, general, [(235)]
— and precision, child training in, [(237)]
Obtuse Japanese cypress, [(123)]
Opposite branched trees, [(31)]
Orange, Osage, [(105)], [(128)]
Oriental spruce, [(122)]
— sycamore, [(63)], [(123)]
Osage orange, [(105)], [(128)]
Ostrya virginiana, [(70)]
Outdoor lesson on trees, [(234)]
Oyster-shell scale, [(53)]

Paper birch, [(66)]
Picea canadensis, [(15)]
— excelsa, [(13)]
— mariana, [(15)]
— orientalis, [(122)]
— parryana, [(15)]
— pungens, [(15)], [(123)]
Pignut hickory, [(87)]
Pin oak, [(79)], [(119)], [(125)]
Pine, Austrian, [(9)], [(11)], [(122)]
—, Bhotan, [(6)], [(122)]
—, Mugho, [(123)]
—, red, [(11)], [(126)]
—, Scotch, [(9)], [(11)]
— trees, [(1)]
— weevil, white, [(4)]
—, white, [(122)], [(126)]
Pines, [(224)]
Pinus Austriaca, [(9)]
— excelsa, [(6)]
— mughus, [(123)]
— resinosa, [(11)], [(126)]
— rigida, [(6)]
— strobus, [(4)], [(122)], [(126)]
— sylvestris, [(9)]
Pitch pine, [(6)]
Pith, [(106)]
Plane or sycamore tree, [(60)]
Plant lice, or aphides, [(68)], [(152)]
— study, value of, for children, [(235)]
— trees, how to, [(130)]
Planting forests, [(179)]
— forests with seedling trees, [(189)]
— little trees, methods of, [(211)]
—, improving woodland by, [(207)]
— new trees, [(207)]
— trees, [(128)], [(130)]
— — most economical method, [(211)]
— — on land unsuitable for crops, [(207)]
Plants, adaptation of, to seasonal changes, [(238)]
Platanus occidentalis, [(60)]
— orientalis, [(63)], [(123)]
Polyporus betulinus, [(157)]
Poplar, balsam, [(54)]
—, Carolina, [(51)]
—, Lombardy or Italian, [(51)]
—, silver, [(53)]
—, tulip, [(92)]
—, white, [(53)]
—, yellow, [(92)], [(231)]
Populus alba, [(53)]
— balsamifera, [(54)]
— deltoides, [(51)]
— grandidentata, [(54)]
— nigra, [(51)], [(128)]
— tremuloides, [(54)]
Pores in wood, [(227)]
— small or indistinct, [(230)]
— varying in size, [(230)]
Poster for private woodlands, [(215)]
Precautions against fire, [(214)]
Protection against fungi and insects, [(196)]
Pruning forest trees, [(166)]
— lawn trees, [(166)]
— shade trees, [(166)]
—, tools used in, [(166)]
—, too severe, [(163)]
— trees, fundamental principles, [(160)]
— —, time for, [(162)]
Pussy willow, [(59)]

Quaking aspen, [(54)]
Quality of trees, how to judge, [(129)]
Quality of wood, how to judge, [(233)]
Quercus alba, [(72)]
— palustris, [(79)], [(119)], [(125)]
— platanoides, [(74)]
— rubra, [(76)], [(124)], [(126)]
— velutina, [(75)]

Red cedar, [(225)]
— — and arbor-vitae, description of, [(19)]
— gum, [(95)], [(231)]
— horsechestnut, [(34)]
— juniper, [(22)]
— maple, [(41)], [(120)], [(125)]
— mulberry, [(105)]
— oak, [(76)], [(124)], [(126)]
— pine, [(11)], [(126)]
— or black oaks, [(226)]
— or sweet gum, [(231)]
Red spider, [(13)]
Redwood, [(226)]
Removal of dead and broken branches, [(162)]
— of trees, how to mark, [(212)]
Requirements of trees, [(110)]
Retinospora obtusa, [(123)]
Rhytisma acerinum, [(41)]
Ring-porous woods, [(221)], [(226)]
Robinia pseudacacia, [(100)], [(126)]
Rock maple, [(38)]
Roots, [(110)]
—, development of, [(110)]
—, protection of, from drying, [(130)]
Rust, apple, [(22)]

Safeguarding forests, [(179)]
Salix babylonica, [(58)]
Salix discolor, [(59)]
Saperda vestita, [(98)]
Sapwood, [(106)]
Sawfly, [(27)]
Scale, cottony-maple, [(39)]
—, oyster-shell, [(53)]
Scale-like leaves, [(19)]
Scarlet oak, [(76)]
Sciadopitys verticillata, [(123)]
Scolytus quadrispinosus, [(85)]
Scotch pine, [(9)], [(11)]
Screening trees, [(128)]
Season, influence of, [(116)]
Seasons for spraying trees, [(137)]
Seedling trees, planting forests with, [(189)]
Shade trees, pruning, [(166)]
Shagbark hickory, [(83)]
Shellbark hickory, [(85)]
Silver maple, [(38)]
— poplar, [(53)]
Soft maple, [(40)]
— pines, [(224)]
“Softwoods” or conifers, [(224)]
Soil erosion, forests prevent, [(187)]
—, influence of, on trees, [(112)]
— of wooded areas, preserving, [(206)]
—, physical character of, important for production of trees, [(114)]
Soulange’s magnolia, [(121)]
Specifications for street tree, [(131)]
Specimens of wood, how to identify, [(222)]
Split trees, [(176)]
Spray trees, how to, [(138)]
Spraying apparatus, [(138)]
— foliage, [(141)]
— for caterpillars, [(145)]
— for fungous diseases, [(160)]
— material, [(138)]
1. arsenate of lead, [(138)]
2. kerosene emulsion, [(139)]
3. lime-sulfur wash, [(139)]
4. tobacco water, [(139)]
5. whale-oil soap, [(139)]
— trees, seasons for, [(137)]
— trees, thoroughness essential, [(138)]
Spruce and hemlock, description of, [(11)]
—, black, [(15)]
—, blue, [(123)]
—, Oriental, [(122)]
—, Norway, [(13)]
—, white, [(15)]
Spruces, [(224)]
Star-shaped leaves, [(93)]
Stem, [(106)]
Stomata, [(117)]
Streets, trees for, [(123)]
Structure of trees, [(106)]
— of woods, [(217)]
Sucking insects, [(4)], [(134)]
Sugarberry, [(71)]
Sugar maple, [(37)], [(121)]
— maple borer, [(37)]
Suggestions for forming tree clubs, [(242)]
— for outdoor study of trees, [(234)]
— for planting little trees, [(211)]
— for safety of tree climbers, [(167)]
— for tree nursery, [(132)]
Surface wounds, [(168)]
Swamp maple, [(43)]
— white oak, [(74)]
Sweet birch, [(66)]
— gum, [(93)], [(231)]
Sycamore, [(230)]
— maple, [(44)]
— tree, [(59)], [(60)], [(123)], [(230)]

Tamarack, [(29)], [(225)]
Taxation, forest lands exempt from, [(216)]
Taxodium distichum, [(30)]
Taxus baccata, [(123)]
Thuja occidentalis, [(22)]
Tilia americana, [(95)]
— microphylla, [(119)]
Tobacco water, [(139)]
Tools used in pruning, [(166)]
Toxylon pomiferum, [(105)], [(128)]
Training a child to recognize trees, [(237)]
— children in observation and precision, [(237)]
Trametes pini, [(27)]
Treating surface wounds, [(168)]
Tree, ailing, how to tell an, [(153)]
— and nature study, value of, [(235)]
—, beech, [(59)], [(128)], [(231)]
—, birch, [(59)]
—, blue beech, [(59)]
— climbers, suggestions for safety of, [(167)]
— clubs, suggestions for forming, [(242)]
—, coffee, [(120)]
— diseases, [(153)]
— diseases, effects of, as destroyers and up-builders, [(239)]
— growth, conditions for, in different localities, [(119)]
—, hackberry, [(59)]
—, iron wood, [(59)]
—, nettle, [(71)]
— nursery, suggestions for, [(132)]
—, plane, [(60)]
— repair, [(168)]
—, sycamore, [(59)], [(230)]
—, tulip, [(126)], [(231)]
—, weeping willow, [(46)], [(59)]
Trees and character building, [(235)]
—, care of, [(134)]
—, care to be exercised in location of, [(130)]
—, civic lessons reflected in, [(239)]
—, community life of, [(239)]
—, coniferous, [(122)]
—, crowding, [(203)]
—, deciduous, [(119)]
—, effect of frost on, [(116)]
—, effect of heat on, [(116)]
—, enemies of, [(239)]
— for lawns, [(119)]
— for screening, [(128)]
— for streets, [(123)]
— for woodland, [(126)]
—, general observations about, [(235)]
—, hickories, walnut, and butternut, [(83)]
—, how to identify, [(1)], [(25)], [(83)]
—, how to mark for removal, [(212)]
—, how to plant, [(130)]
—, how to spray, [(138)]
—, improperly pruned, [(161)]
—, individuality of [(1)], [(182)], [(239)]
—, influence of light on, [(114)]
—, influence of moisture on, [(110)]
—, influence of soil on, [(112)]
—, insects injurious to, [(134)]
—, measuring diameter of, [(183)]
—, methods of planting little, [(211)]
—, methods of removing, [(212)]
—, nature and habits of individual, [(185)]
—, needs that nature or man must supply, [(117)]
—, outdoor lesson on, [(234)]
—, physical character of soil important for production of, [(114)]
—, planting, on land unsuitable for crops, [(207)]
—, pruning, fundamental principles, [(160)]
—, —, how to cut properly, [(162)]
—, quality, [(129)]
—, rapidity of growth of different species, [(186)]
—, requirements of, [(110)]
—, seasons for spraying, [(137)]
—, setting, [(130)]
—, structure of, [(106)]
—, study of rings of various species, [(186)]
—, suggestions for outdoor study of, [(234)]
—, suggestions, for planting little, [(211)]
— suitable for the soil, care in selecting, [(210)]
—, tendency to split, [(176)]
—, thoroughness essential in spraying, [(138)]
—, time for pruning, [(162)]
— told by their bark or trunk, [(59)]
—, training a child to recognize, [(237)]
—, value of, as health givers and moral uplifters, [(237)]
—, what to plant and how, [(119)]
—, when and how to procure, [(129)]
—, when to plant, [(129)]
—, when to spray, [(137)]
—, wooded areas improved by planting new, [(207)]
—, yew, [(57)]
Tsuga canadensis, [(17)], [(128)]
Tulip poplar, [(92)]
— tree, [(90)], [(126)], [(231)]
Tussock moth, [(143)]

Ulmus americana, [(47)], [(119)], [(125)], [(126)]
— campestris, [(50)]
Umbrella pine, Japanese, [(123)]
— tree, [(100)]

Value of plant study for children, [(235)]
— of tree and nature study, [(235)]
— of trees as health givers and moral uplifters, [(237)]

Walnut, [(83)]
—, black, [(87)]
Wasteful lumbering, [(193)]
Weeping willow tree, [(46)], [(59)]
Western catalpa, [(104)]
Whale-oil soap, [(139)]
White ash, [(35)], [(126)], [(227)]
— birch, European, [(68)], [(120)]
— cedar, [(24)]
— elm, [(50)]
— flowering dogwood, [(104)]
Whiteheart hickory, [(87)]
White maple, [(40)]
— mulberry, [(105)]
— oak, [(72)]
— oak, swamp, [(74)]
— or gray birch, [(64)]
— pine, [(4)], [(122)], [(126)]
— pine weevil, [(4)]
— poplar, [(53)]
— spruce, [(15)]
Whitewood, [(92)], [(98)], [(231)]
Willow, weeping, [(58)]
—, pussy, [(59)]
Wood, diffuse-porous, [(221)], [(233)]
—, diseased, disposal of, [(212)]
—, early, [(220)]
— fibers, [(222)]
—, how to identify specimens, [(222)]
—, how to judge quality of, [(233)]
—, late, [(220)]
— medullary rays, [(220)]
— parenchyma, [(222)]
— resin ducts, [(222)]
—, ring-porous, [(221)]
— spring, [(220)]
—, structure, of, [(217)]
— summer, [(220)]
Woodland, care of the, [(203)]
— how to improve by removing trees, [(211)]
— how to judge, unfavorable conditions, [(203)]
— trees, [(126)]
Woodlands, other means of protecting, [(216)]
Woodlot, small cost of well-selected young trees for the, [(208)]
Wood, structure of, [(217)]
Wooded areas improved by planting new trees, [(207)]
— areas, preserving soil of, [(206)]
Woods, identification, properties and uses of common, [(217)]
—, ring-porous, [(221)], [(226)]
— with large and conspicuous rays, [(226)]
— with pores, [(226)]
— with resin ducts, [(224)]
— with small and inconspicuous rays, [(227)]
— without pores, [(224)]
— without resin ducts, [(225)]
Wounds, importance of covering, [(164)]
—, methods of covering, [(164)]
—, treating surface, [(168)]

Xerophytes, [(111)]