227 
when that report went to press. A year has passed and certain addi¬ 
tional conclusions may now be drawn with confidence. 
The experiments are as follows: 
II.— FIELD EXPERIMENTS IN GEORGIA. 
I. Peach on Marianna plum stock—Puds f rom the healthy-looking side 
of a rosetted peach tree .—‘This experiment was made to determine 
whether the disease was latent in the healthydooking side of the af¬ 
fected trees, and would afterwards appear in buds cut from the same 
and inserted into healthy stocks. The buds Avere set July 1. 1890. 
The condition up to the fall of 1891 of the trees grown from these buds 
is given under Experiment 2 (Bull. No. 1, p. 56). These trees were 
reexamined October 31, 1892. All of them were still free from rosette. 
The buds have now been set twenty-eight months and have grown into 
vigorous tops, so that there can no longer be any doubt that the north 
part of the parent tree was entirely free from taint of disease at the 
very time that the south part was badly affected. The rest of this tree 
became diseased the following season and is now dead. 
II. Marianna plum stocks inoculated with buds taken from rosetted\ 
peach trees .—This experiment was made to determine whether the peach 
and plum rosette are identical. For this experiment and the next 
about 250 trees were selected from 5 nursery rows on the farm of Will¬ 
iam Warder, Griffin, Ga. These trees were propagated from cuttings 
and were 1J years old at the beginning of the experiment. Two rows 
were inoculated and 3 were held for comparison. June 8, 1891,104 of 
these trees were inoculated with buds cut from 6 or 8 of the badly ro¬ 
setted young trees described in Experiment 1 (Bull. No. 1). One to two 
buds were inserted into each tree in the usual way. November 13, 
1891, all were free from rosette. At that time the condition of the in¬ 
serted buds Avas as follows: In 42 trees the buds had healed on and 
were still alive in whole or part, but only 2 had grown into shoots, and 
both were feeble—only .J and 1 inch long. In 2 or 3 trees the unions 
were doubtful. In the rest the buds failed to unite with the stocks. 
There is no question, therefore, but that in more than one-third of the 
trees an organic union had taken place between the plum stocks and 
the rosetted buds. Only five months had elapsed and it Avas thought 
that perilaps a longer period might be necessary to infect plum from 
peach than had been found necessary in case of peach on peach. These 
trees were reexamined November 1,1892, i. <?., more than sixteen months 
from the date of inoculation, and all were still free from rosette. There 
is, therefore, good reason to believe that the Marianna plum is not sub¬ 
ject to this disease. 
III. Marianna plum stocks inoculated with buds taken from a rosetted 
Kelsey plum. —This experiment Avas made to determine whether the 
plum rosette could be transmitted to plums. The trees used for these 
