1074 



AMERICAN FORESTRY 



Canada lumberman, Oct. 1, 1915. E>ouglas 

 fir markets in Great Britain, by H. R. 

 MacMillan, p. 25-6. 



Engineering magazine, Oct., 1915. Forests 

 of the United States, by Leonard 

 Lundgren, p. 1-17. 



Engineering news, Aug. 12, 1915. Diagrams 

 for cost of ties; Canadian Pacific railway, 

 p. 292. 



Hardwood record, Oct. 10, 1915. Changes 

 in utilization of wood, p. 18-19; Amazon 

 lumbering possibilities, p. 19; Records of 

 large hardwood trees, p. 22-3. 



Lumber trade journal, Sept. 15, 1915. 

 Louisiana timber valuation raised, p. 11, 

 14, 19-25. 



Lumber world review, Sept. 25, 1915. 

 Problems in kiln drying lumber, by 

 Harry D. Tiemann, p. 21-3. 



Mississippi Valley lumberman, Sept. 10, 1915. 

 ^The forests of New Zealand, p. 38-9; 

 Increasing the efficiency of creosoted 

 wood block pavements, by O. P. M. Goss, 

 p. 59. 



Paper, Sept. 22, 1915. Woodpulp for ex- 

 plosives, by Clayton Beadle, p. 14. 



Paper, Oct. 6, 1915. Experimental work on 

 soda cellulose; the diminishing of fuzz in 

 soda pulp by proper cooking conditions, 

 by Sidney D. Wells, p. 14-15; The 

 dyestuff situation in the United States, 

 by I. F. Stone, p. 16-17. 



Paper trade journal, Sept. 9, 1915. Many 

 uses found for waste timber, p. 44.. 



Paper trade journal, Sept. 23, 1915. Russia 

 the world's timber yard, p. 46. 



Paper trade journal, Sept. 30, 1915. Possi- 

 bilities of accurate determination of 

 ground wood in paper, by Max Cline, 

 p. 50-2. 



Pulp and paper magazine, Sept. 1, 1915. 

 The manufacture of high grade sulphite 

 pulp, by L. Wimmer, p. 156-8; The 

 manufacture of yams and textiles 

 from paper pulp, p. 459-63. 



St. Louis lumberman, Sept. 15, 1915. The 

 wood silo vs. substitutes, by John B. 

 Woods, p. 52-3; Creosoted pine block 

 pavements, by F. P. Hamilton, p. 79. 



St. Louis lumberman, Oct. 1, 1915. Silo 

 exploitation, by J. Crow Taylor, p. 50-1. 



Savannah naval stores review, Sept. 11, 1915. 

 Saw mills are eating up the pine trees, 

 p. 13, 18. 



Southern lumberman, Sept. 18, 1915. The 

 public interest in lumber trade extension, 

 by E. A. Sterling, p. 29-30. 



Southern lumberman, Oct. 2, 1915. Position 

 of government in sale of timber explained, 

 by W. B. Greeley, p. 23. 



Timber trades journal, Sept. 18, 1915. An 

 export sawmill in British East Africa, 

 by P. E. Brown, p. 413; Mahogany 

 industry of British Honduras, by W. D. 

 Homaday, p. 439. 



Timberman, Sept., 1915. National forest 

 timber sales, p. 25-6; Alaska forests, 

 by H. S. Graves, p. 26; New Zealand 

 forests and timber industry, p. 30-32; 

 Legitimate field for structural timber, by 

 Paul P. Whitham, p. 40; Modem skyline 

 systems, p. 45-6; Uniformity in log 



Vertical Farming 

 Proved 



By Effects of Orchard Blasting with 



SIPDE 



Red Cross 



Farm 

 Powder 



These cuts are made 

 from photos show- 

 i n g comparative 

 growth of pear trees 

 from Spring of 1913 

 to August, 1914, 

 B e 11 e m o n t Or- 

 chards, Inc., Nor- 

 folk, Va. 



3Vll..t,<;."--# 



-x>AVviJ\^i'T.'^'^^-J" 



(iTc^ 



\ lA^ progressive farmers and orchardists know that 

 ^ trees planted in blasted ground grow much faster 

 than those planted in the old way and bear fruit earlier. 

 This proves the truth of the principles of Vertical 

 Farming, which aims to cultivate downward as well as 

 to tni the top soil. 



Three years ago tree planting in blasted holes was 

 experimental ^now millions of trees are set out by the 

 Vertical Farming method every Spring and Fall. 



In like manner, blasting the subsoil to increase 

 general crop yields, now regarded as experimental, 

 will in a few years be common. 



To learn how and why Vertical Farming may double 

 the yields of your farm, get the Free Reading Course 

 in Vertical Farming by Dr. G. E. Bailey, one of the 

 best works on soils and soil culture ever published. 

 Sent free with every request for our Farmer's Handbook 

 No. 350 F. Write now. 



. I. Du Pont De Nemours Co. 



EstabUshed 1802 



Wilmington, Delaware 



