ILLUSTEATIONS. 



PLATES. 



Page. 



PLATK I. Map showing distribution of forests and lumber regions in the United States 48 



II. Map showing distribution of forest land, brush laud, and open country west of the 97th meridian, 



and national forest reservations 48 



III. Map showing distribution of forest types in North America 48 



IV. Fig. 1. Longleiif-pino forest in Louisiana Mats, virgin, scorched by tire, as usual. Fig. 2. Longleaf- 



pine forest alter removal of merchantable timber 64 



V. Cuban-pine Hat woods of Florida 66 



VI. Map showing distribution of longleaf-pine forests 68 



VII. Map showing distribution of shortleaf pine 68 



VIII. Map showing distribution of loblolly pine 68 



IX. Longleaf pine (I'iniix pal list rii), typical trees 74 



X. Longleaf pine (Pinus paliiatria), seedlings and young plant 74 



XI. Longleaf pine (Pinna palustria), bud development ,... 76 



XII. Longleaf pine, (Pinus palustrix), male and female flowers 76 



XIII. Longleaf pine (Finns paluslrin), open cone, natural size 7(> 



XIV. Cuban pine (I'inui Iieteropliylla), development of cone 7* 



XV. Shortleaf pine (Pin us ecliinata), forest-grown specimens in Missouri 80 



XVI. Shortleaf pine (Pin UK /cliinula), development of cone, seed, and leaves 80 



XVII. Shortleaf pine (Piniis echinata), seedling, male and female flower and leaf sections 80 



XVIII. Loblolly pine (Piniis til-da), typical tree 82 



XIX. Loblolly pine (Pimm tirda), female (lowers, cone and seed 82 



XX. Typical cross sections of Pin us tii'da, helerophylla, and ylabra 114 



XXI. Typical cross sections of Pinus palnatria and echinata, and radial sections of Pinns paJualrin and 



i/labra 114 



XXII. Radial sections of Piniis ecliinata and lieterophylla 114 



XXIII. Kadial sections of Pinus Imla and tangential sections of Pinna palnntris and ecliinata 114 



XXIV. Tangential sections of Pin its ta-da, heterophylla, and glalra 114 



XXV. Tangential sections of Pin us echinata, heterophylla, and i/labra 114 



XXVI. Transverse resin ducts 114 



.XXVII. Map showing forest conditions of Wisconsin 138 



XXVIII. Fig. 1. Chipping the longleaf pine. Fig. 2. Dipping the crude resin 141 



XXIX. Fig. 1. American practice of boxing and chipping. Fig. 2. Tools used in American practice of tur- 

 pentine orcharding 154 



XXX. Fig. 1. Turpentine orcharding in France. Fig. 2. Tools used in Frencfc practice of turpentine 



orcharding 158 



XXXI. Fig. 1. Turpentine gathering (Hngues system), till and pot. Figs. 2, 3, and 4: Cross sections 



through bled trees 158 



XXXII. Map for direction of forest managers 240 



TEXT FIGURES. 



FIG. 1. Diagram showing comparative progress of height growth in average trees 85 



2. Diagram showing comparative progress of diameter in average trees 86 



3. Diagram showing comparative progress of volume growth in average trees 87 



4. Non-porous woods 98 



5. King-porous woods 99 



6. Diffuse-porous woods 



7. Wood of coft'ee tree - 102 



8. Wood of ash 



9. Wood of red oak 



10. Wood of chestnut 103 



11. Wood of hickory !04 



H. Doc. No. 181 3 



