ILLUSTRATIONS. 



PLATES. 



Page. 



Plate I. Longleaf Pine (Pinu* paluslri*) Frontispiece. 



II. Fig. 1. Lougleaf Piue forest in Louisiana Hats, virgin, scorched by fire, as usual; Fig. 2. 



Longleaf Pine forest after removal of merchantable timber 27 



III. Map showing distribution of Longleaf Piue and Cuban Pine 30 



IV. Pinux paluxtris, bud and leaf 50 



V. 1'iniiK palnxtrix, male and female flowers 52 



VI. Pinux jialnxtrix, cone and seed 52 



VII. I'tHMi palitxtrix, seedlings and young plant 54 



VIII. Turpentine orcharding in Louisiana 69 



IX. Cuban pine flatwoods of Florida 77 



X. /'in Kg helc)-oi>hylla, male ami female flowers 82 



XI. /'i hrtcrophylla, cone and seed ' 84 



XII. Shortleaf Pine (Pinna echinata), forest grown specimens in Missouri 91 



XIII. Suortleaf Pine (Plnns echinata), a roadside specimen in North Carolina 92 



XIV. Map showing distribution of Shortleaf Pine 93 



XV. Pimm echinata seedling; male and female flower, and leaf sections 100 



XVI. /' Kg echinata cone, seed, and leaves 102 



XVII. Loblolly Piue (Finn* ta-da) 113 



XVIII. Map showing distribution of Loblolly Pine 116 



XIX. Pinus tii'da, male flowers and leaves 122 



XX. /'inns tii'da, female flowers, cone, and seed 124 



XXI. Typical cross sections of Pinux ttuda, heterophylla, and glabra 154 



XXII. Typical cross sections of Pinus palustris and echinata, and radial sections of Pinus palustris and 



glabra 156 



XXIII. Radial sections of Pimm echinata and heterophylla - 158 



XXIV. Radial sections of /'ing to-do and tangential sections of Pinus palustris and echinata 160 



XXV. Tangential sections of Pinus to-da, heterophylla and glabra 162 



XXVI. Tangential sections of Pinus echinata, heterophylla, and glabra, showing number and distribution 



of pith rays and proportion of pith-ray cells 164 



XXVII. Transverse resin ducts tangential views Kit; 



FIGURES. 



Fig. 1. Diagram showing variation of weight with height of tree 16 



2. Schematic section through stem of Longleaf Pine, showing variation of specific weight with height, 



diameter, and age at 20 (aba), 60 (tied), 120 (ecee), and 200 (ffff) years 17 



8. Diagram showing variation of compression strength with moisture 19 



I. Diagram showing loss of water in kiln drying and reabsorption in air, shrinking and swelling 20 



5. Diagram showing comparative progress of height growth in average trees 22 



6. Diagram showing comparative progress of diameter growth in average trees 23 



7. Diagram showing comparative progress of volume growth in average trees 24 



8. Growth of Longleaf Pine in height, diameter, and volume 60 



!l. Tools used in turpentine orcharding 70 



10. Improved method of turpentine orcharding 71 



11. Growth of Shortleaf Pine 107 



12. Growth of Loblolly Pine 129 



13. Variation of summerwood per cent from pith to bark 146 



14. Variation of specific gravity with summerwood per cent and age of section 147 



!.">. Variation of summerwood per cent with rate of growth (width of ring) 148 



16. Schematic representation of coniferous wood structure 149 



17. ( 'ell endings in pine 149 



lx. ( IOSH section of normal and stunted growth 150 



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