"PARADOX" WALNUT WOOD 

 TWO INCHES IN DIAM- 

 ETER EACH YEAR 



The cross section of a "Paradox" 

 Walnut trunk, pictured opposite, shows 

 the annual rings of the tree, marking 

 its yearly growth. The photograph is 

 made exact size, and it will be noted 

 that some of the markings are an inch 

 apart, thus showing that the tree in- 

 creased in diameter two full inches 

 within the year. On good land an in- 

 crease of four inches in circumference 

 is usual. 



