NEW CREATIONS IN PLANT LIFE 
attention whatever. He says that by culti- 
vation and irrigation they would probably be 
led to produce as much timber in eight or 
ten years as they have done in fourteen years 
with no aid. The Paradox will grow in any 
climate similar to that of California, anywhere 
where the English walnut will grow; the 
Royal will grow anywhere in the United 
States, or any other country, where the hardy 
New England black walnut will grow. 
The secret of these wonderful trees lies in 
the fact that Mr. Burbank selected them from 
the most rapid-growing of all the many 
thousands of seedlings he had under test, at 
the same time taking into account all the 
other characteristics that were essential. Enor- 
mous rapidity of growth, so to use the words, 
in the early life of the seedling has been main- 
tained in after years so that these two trees 
now stand at the head — the most rapid - grow- 
ing trees in the temperate zones of the globe. 
They are deciduous, losing their leaves like 
the elm and maple in the late autumn. 
In this, as in so many other lines of Mr. 
Burbank’s investigations, a new field is now 
opened up for practical work. It now becomes 
56 
