AMERICAN FORESTRY'S ADVERTISERS 



Vertical Farming Proved 



By Effects of 



ORCHARD BLASTING 



WITH 



TREE 



SET IN 



SPADE 



DUG 



HOLE 



Red Cross 

 FARM POWDER 



THESE cuts are 

 made from photos 

 showing comparative 

 growth of pear trees 

 from spring of 1913 to 

 August, 1914, Belle- 

 mont Orchards, Inc., 

 Norfolk, Va. 



TREE SET 



IN BI^STED 



GROUND 



|^,^-^;i^'Wji.> 



ALL 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 till the top soil. 



Three years ago tree planting in blasted holes was experi- 

 mental — now millons 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 pubUshed. Sent free with every request 

 for our Farmer's Handbook No. 350-F. Write now. 



DU PONT POWDER COMPANY 



Established 1802 



Wilmington, Delaware 



In writing to advertiaers kindly mention American Forestry 



U 



