12 



Luther Burbank's Late Introductions 



growing walnut. The writer has seen trees of the California Black Walnut and 

 Paradox five years old, planted in orchard form, and the Paradox was fully ten 

 inches in diameter, while the California Black, taking the very best tree for com- 

 parison, did not measure over seven inches. Leaving out its value, which is un- 

 questioned for timber, avenue and street planting, the fact that it is such a re- 

 markably strong grower makes it additionally valuable to serve as a stock for 

 grafting. Another point, which should be borne in mind is that the French and 



The Paradox Walnut Tree in foliage. 



Sixteen years old; planted on hard side walk; never irrigated; height, 60 feet; 

 spread of limbs, 75 feet; trunk, 3 feet from the ground, 26 inches in diameter 



English walnuts have a greater affinity for this stock than they have for the Cali- 

 fornia Black Walnut. The Paradox takes very readily on the California Black 

 Walnut root, even more so than the Royal, and makes almost twice the growth in 

 the nursery rows. In grafting Paradox in nursery rows on California Black Wal- 

 nut, no difficulty is experienced in securing a seventy-five per cent stand. 



Adaptability. The French Walnuts find congenial conditions at Inter- 

 laken, Switzerland, at the base of the Jungfrau in the Swiss Alps, where it is 



