ILLUSTRATIONS. 



PLATES. 



Paga 



Plate I. LongleafPine(Pinusi)aiM8«m) Frontispiece. 



II. Fin. 1.— I-ongleaf Pine forest in Louisiana flats, virgin, scorched by fire, as usual; Fig. 2.— 



Lou},'leat' Pine forest after removal of nierfliantable timber -' 



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



IV. riiiiis iialiitttris, bud and leaf ^ 



V. riniiH pdliintrin, male and female flowers =^- 



VI. I'in iif paliixtrig, cone aud seed 



VII. riniis })alii'<lrix, seedlings and young plant 54 



VIII. Turpentine orcharding in Louisiana "** 



IX. Cuban pine flatwoods of Florida '^ 



X. Finns helcroph ylla , male aud female flowers '*' 



XI. Pintis hctri-ophi/Ua, cone and seed °^ 



XII. Shortleaf Pine (Pinus echinata), forest grown si)ecimens in Missouri »> 



XIII. Shortltaf Pine {Pinus echinata), a roadside specimen in North Carolina 86 



XIV. Map showing distribution of Shortlcaf Pine ^ 



XV. PiHHsec/iiHrt/a .seedling; male aud female flower, and loaf sections 94 



XVI. Pinus eihinata coav, seed, and leaves ^ 



XVII. Loblolly Pine (Pinus Uida) J^ 



XVIII. Map showing distribution of Loblolly Pine 



XIX. Pinus lada, male flowers and leaves 



XX. Finns tada, female flowers, cone, and seed ^'^ 



XXI. Typical cross sections of Pinu« ladu, lieierophyUa, und glalna ^^* 



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

 il'i'bra 



XXIII. Radial sections of Pinus echinata and heterophylla '* 



XXIV. Radial sections of Pinus la-da and tangential sections of Pinus paiustrix and vchinula WO 



XXV. Tangential sections of Finns tada. helcrophyUa aud glal)ra 1^- 



XXVI. Tangential sections of Finns cchinala, hetei-ophijUa, and giahra, showing number and distribution 



of pith rays and proportion of pitU-ray cells ^^ 



XXVII. Transverse resin ducts— tangential views ^^ 



FIGURES. 



Fig. 1. Diagram showing variation of weight with height of tree It* 



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



diameter, and age at 20 {aim), fiO {dcd), 120 (mr), .and 200 {ffj]r) years 1' 



3. Diagram showing varir.tion of compression strength with moisture 19 



4. 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 luight, diameter, and volume 60 



9. Tools nsed in tiiriientine orcharding '_ 



10. Improved method of turpentine orcharding ' 



11. Growth of Shortleaf Pine 



12. Growth of Loblolly Pine J^J; 



13. Variation of sumnuTwood per cent from )>ith to bark 1^_ 



14. Variation of specific gravity wilh summerwood per cent and age of section 13' 



15. Variation of summerwood per cent with rate of growth (Width of ring) 13* 



16. Schematic representation of coniferous wood structure 1- •' 



17. Cell endings in pine 



18. Cross section of normal and stunted growth 



