296 Advantage of Grafting Certain Trees . 
trees of which remain unproductive during many years 
after they are planted : and that parts of the bearing 
branches of those, detached from the old trees, and em- 
ployed as grafts, would still retain the character and ha- 
bits of bearing branches. 
Having therefore planted in the spring of 1799 some 
walnut trees, of two years old, in garden pots, I raised 
them up to> the bearing branches of an old walnut tree, by 
placing them on the top of poles placed in the earth ; and 
I grafted them, by approach, with parts of the bearing 
branches of the old tree. A union took place during the 
summer, and in the autumn the grafts were detached 
from the parent stock. The plants thus obtained were 
planted in a nursery, and without any peculiar care or 
management, produced both male and female blossoms in 
the third succeeding spring, and have since afforded blos- 
soms every season. The frost has, however, rendered 
their blossoms, as well as those of other trees in their 
vicinity, wholly unproductive during the last three years, 
and in the spring of 1805, almost wholly destroyed the 
wood of the preceding year. A similar experiment was 
made in the same year, but under many disadvantages, 
on the mulberry tree. I had not any young plants of 
this tree, and therefore could only make the experiment 
with scions of one year old ; and of these I had only two, 
which had sprung from the roots of a young tree, in the 
preceding year. These were planted in pots, and raised 
to the bearing branches of an old tree, in the manner I 
have already described in speaking of the walnut tree. 
One of these scions died ; the other, which had but very 
few roots, succeeded ; and the young grafted tree bore 
fruit the third year, and has continued annually produc- 
tive. In the last spring I introduced it into my vinery, 
where its fruit ripened in the greatest siaie of perfec- 
