14 
Bulletin 84. 
TABLE IV. 
Inoculation Experiments with Cultures of Bacteria from Various Sources- 
No. of 
Experiment. 
No. of 
Inoculation. 
Source of 
Culture. 
Date of 
Inoculation. 
Date of 
Examination. 
i 
Results. 
No. 17. 
6 Apples 
Apricot twig. 
July 29. 
August 18. 
Two fruits diseased. 
No. 18. 
5 Apples 
Ripe apricot 
fruits. 
July 29. 
August 18. 
All diseased. 
No. 19. 
1 Apples 
Apricot twigs that 
had been inocu¬ 
lated with cul¬ 
tures from apri¬ 
cot twigs. 
July 29. 
August 18. 
One fruit diseased. 
No. 20. 
6 Apples 
Check. 
August 18. 
Sound. 
No. 21. 
10 Apples 
Apricot twigs that 
had been inocu¬ 
lated with cul¬ 
tures of pear 
blight. 
Aug. 7. 
August 18. 
August 30. 
Three fruits, decaying. 
Three more fruits diseasad. 
No. 22 . 
5 Apples 
Check. 
August 30. 
Sound. 
Cultures from apricot twigs produced decay in two fruits out of six in¬ 
oculated while all inoculations with cultures from ripe apricots were successful. 
One out of four inoculations was successful, where a culture from an 
apricot twig’, from McClelland’s, that had been inoculated with cultures from 
apricot twigs were used. As a more complete test was desirable than was af¬ 
forded by No. 19, a similar experiment was undertaken in No. 21. Ten apples 
were inoculated with diseased tissue taken from an apricot twig that had been 
inoculated with a known culture of pear blight. Six of these inoculations were 
successful. The check apples in every instance remained sound. 
