No. 33.] 
No of 
experiment, 
86 
transferred from one tree to another by 
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Source 
of virus. 
Apple. 
Pear. 
ce 
6é 
66 
Apple. 
Pear. 
¢é 
66 
66 
66 
Apple. 
Quince. 
6 
66 
Days of 
incubation. 
20 
GO 09 CO AI SD OO SD S* SO 
means of inoculation, as ~ 
maintained by Professor Burrill, that I deem it unnecessary to state 
the facts more fully. 
The place of the inoculation was early found to bea matter of 
moment. 
Good results were obtained with thrifty growing parts, 
but to get the best results it was not only necessary to use green or 
No. of 
experiment, 
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Days of 
Source. 
of virus incubation. 
Pear. 8 
66 8 
és 41 
of 11 
66 8 
6e g 
66 Fy: 
Quince. 5 
(59 
Pear. 5 
(9 5 
66 5 
‘“ 15 
‘6 5 
it 202 
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és 15 
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és 15 
‘“ 15 
‘ 8 
