ILLUSTRATIONS. 



PLATES. 



Pace. 



White Pine forest FrontiBpiece. 



Plate I. Map showing original distribntiou of White Pine (['inufi strains L. 



11 



II. Fig. 1.— Wliite Pine mixed with hardwoods in teutral New York. Fig. L'.— Old White Pine tree iu 



mixed forest (young pine in the foreground) in New York State 12 



III. Map .showing forest conditions of northern Wisconsin 1* 



IV. Fig. 1.— Transporting logs over ice r.>ad iu Michigan. Fig. 2.— Lum<>er camp in Michigan .... 20 



Y. Leaves and liud of the White Pine 



VI. Cones, seeds, etc., of the White Pine ^ 



\ll. Sections of young shoot of White Pine -° 



VIII. Sections of wood of White Pine -_ 



IX. Seedliu-8 of White Pine -' 



X. Fig. 1.— A thinned pine grove in New Hampshire. Fig. 2.— Y'onng pine in New Hampshire 48 



XI. Fig. 1.— Young pine iu need of pruning. Fig. 2.— Young pine pruned 50 



XII. Disease of White Pine: Agaricus melleiis ^* 



XIII. Disease of White Pine: Polyporus annosus ^ 



TEXT FIGrllES. 



Fig. 1. Bark of <dd MTiite Pine "^ 



2. Diagram showing height growth of mixed and of pure growth White Pine in I'resque Isle County, 



Mich ^- 



3. Diagram showing height growth of White Pine in forest of varying composition in Pennsylvania 33 



4. Girdled White Pine continuing to grow *" 



5. Deiidroctoniis frontalis *^ 



6. Tomicns cacograph us '^ 



7. Galleries of Tomicns cacographus ^_ 



8. Gnalhotrichns materiarius ^' 



9. Gallery of Gnathotrichus matcriarins ^ 



10. Chalcophora virgiuiensis '^ 



11. rissodes sirobi 



12. Larval mines under liark and pupal cells of I'issodis sirohi '•>^ 



13. Lophyrus abbotii ' 



14. Tubes of pine leaves made by pine tube-builder ^ 



la. Chionaspi8 pmifoliw 



16. Diagram showing specific weight of wood at different cross secticms of the stem; also a decrease ot 



weight from the stump upward, and the similarity of the wood of different trees 76 



17. Diagram showing specific weight of kiln-dry wood at different points iu the stem from ground upward. 76 



18. Diagram showing effect of moisture on crushing strength ^0 



19. Diagram showing rate of height growth of dominant trees 93 



20. Diagram showing rate of height growth of codomiuant trees ''^ 



21. Diagram showing rate of height growth of oppressed trees ^-^ 



22. Diagram showing height growth of dominant, codomiuant, and oppressed trees throughout range 96 



23. Diagram showing volnme growth of dominant, codominaut, and oppressed.trees throughout range ... 97 



24. Dian-ram showing height growth of domiuant trees, by States 100 



25. Diagram showing height growth of codomiuant trees, by States ^"^ 



26. Diagram showing height growth of oppressed trees, by States 101 



27. Diagram showing volume growth of dominant trees, by States 10- 



28. Diagram showing volnme growth of codominaut trees, by States 103 



29. Diagram showing volume growth of oppressed trees, by States 104 



