4 CONTENTS. 


Page 
Management of yellow pine on the National Forests ........................- 47 
General policye-— see -eenceees Aig ibalatet he's Sie =, ROSY Segre tie eee ere 47 3a 
Method of cutting: 5.2.55 255555 ae ee ee 43 aN 
Marking the timber 522% 5524 ss3ocse ee See 49 
Rotation of Cut. ci2s52 2.h es oie Sete eee 51 
Fire protecttOn<. =< 2.e.cmsaiks Jone ee 52 
Disposal..of brush. :. o223 25 Sas fos ee ee A ee a 53 
Cost of handling Government timber sales....-.._._......1...1 2-2. 54 
Reforestation... -.. Ss f5 sd. Sas fe Se Sop ee 55 
seed collectioniand extractlioncee === ee 5 5 eee es 56 OF 
Nursery practice: 22 222sse 5 See aa ee 57 | 
Field:sowineiand: plantings) ¢25- sy 5 ees ae ee ee 58 oa 
Other-sources Of InCOMC 255.2 ees a aes ee 59 
Conservative lumberins/ om private lam disses ae eer 60 
SUMMIMANY. «ia ass assess Sates ae eae i ore a se sc 62 
Appendix— Volume tables: 4. 32/22 20a ee ee 63 
ILLUSTRATIONS: 
PLATES. 
Page. 
Puate’ I. Fig. 1—Typical open stand of western yellow pine after conserva- 
LIVE® CULLING Sa sch: 2 2o ees er ee Frontispiece. 
II. Fig. 1—Fully developed stand of western yellow pine being 
marked for cutting. Fig. 2—Thrifty blackjack left after con- 
servative Cull Os -eeaes eee eee 2 Hs Sees eres 48 
III. Fig. 1—Close utilization; tops cut for coal-mine props. Fig. 2— 
Standing dead timber; a waste and a fire menace............... 56 
IV. Fig. 1—Extracting western yellow-pine seed after drying. Fig. 2— 
Western yellow-pine seedlings killed by sheep. ............... 60 
TEXT FIGURES. 
Fic. 1. Distribution of western yellow pine within the National Forests of 
Arizona jand New Mexico S22 =2 oe 2 ae = ae ee 8 
2 (a, b, c, d). Root systems of a western yellow pine and a blackjack. 9,10, 11,12 
3. Leaves, seed, and cones of western yellow pine. ................... 16 
4. Relative quantity of reproduction on Coconino and Tusayan Forests. . 21 Fy 
5. Distribution of blackjack ons 5-acre plotes=ss-ee— eee ee 28 
6. Various types of western yellow-pine wood...........-......--.-..-- 34 
7. Transverse, radial, and tangential sections of western yellow-pine 
WOOd 22 2. 1a se ae eee Sie ee ee 35 
8. Transverse section of a western yellow-pine resin duct-.-.-....-.-.--. 36 
9. Two western yellow-pine tracheids, magnified 50 diameters .......-.. 37 
10. Ordinary pith ray, cut longitudimally == see == ae eee 38 i 
11. Ordinary pith ray as viewed in tangential section. ..........-...--- 39 94 
12. A pith ray containimea resin ducts 9-52 ss eee eee 39 

