66 



VERTICAL FARMING 



The fewer the lines of weakness the more close and cloddy 

 the structure. What will granulate soil to the depths quicker 

 than explosives? It is admitted that present machinery can 

 only increase the feeding zone of the roots an inch or two. 

 What can explosives do in this line? A cubic yard of hard soil 

 has 6 faces and 9 square feet in each face, or a total of 54 square 

 feet. Divide it into I foot cubes and there are 162 feet of 

 surface. Break it into inch cubes and it presents 1944 square 

 feet, or nearly 1/20 of ah acre of feeding surface for the roots. 



TOY BLOCKS TO REPRESENT THE INCREASE IN SURFACE AREA 



THE REPRESENTED CUBIC YARD HAS A SURFACE AREA OF 54 



SQUARE FEET. THE 27 CUBIC FEET A SURFACE OF 1 62 



SQUARE FEET. IF BROKEN TO INCH CUBES THE 



AREA IS 1944 SQUARE FEET 



