EXPERIMENTS IN" THE CONTROL OF POTATO LEAK. 3 
elapsed for the incubation of the fungus in any inoculated tubers. 
They were then resorted and the number of rotten potatoes in each 
sack noted. The wounded tubers which had not rotted were sacked 
and sold. 
RESULTS OF THE EXPERIMENTS. 
The first car of potatoes included in these experiments was har- 
vested and sorted on September 4 and 5. For the car of sound 
potatoes (270 sacks), 349 sacks of field-run potatoes were required. 
Of the 79 sacks sorted out, 43 sacks were of tubers which had been 
wounded by the removal of knobs, and 25 sacks had been injured 
with the digging forks. The other 11 sacks represent shrinkage 
due to the drying of the potatoes and to the stretching of the sacks 
used in resacking. 
This car of sound potatoes was shipped to Oklahoma. It was 
impossible for the writer to examine the potatoes after the car left 
Stockton, Cal. No leak had been reported by the consignee on 
October 1, so it is reasonable to suppose that the potatoes arrived in 
good condition. 
The injured tubers sorted out were all stored in the warehouse 
until September 13, when part of them were sorted and the unin- 
fected potatoes sold. The remaining tubers were sorted on Septem- 
ber 18, 14 days after the first of the lot were harvested. 
The second and third cars of potatoes were harvested and sorted 
from September 8 to 12, inclusive. For the second car (270 sacks), 
326 sacks of field-run potatoes were required. Of the 56 sacks 
sorted out, 20 sacks were of tubers that had been injured by the 
digging forks, and 31 sacks were those from which knobs had been 
removed. The other 5 sacks represent shrinkage. The car of sound 
potatoes was shipped to Barstow, Cal., and was examined there by 
the writer six days after the potatoes had been harvested. No leaky 
tubers were found in any of the 20 sacks examined. Some leak was 
reported from Phoenix, Ariz., where the car was finally sent. 
The third car of potatoes in these experiments was sorted imme- 
diately after the second. It required 325 sacks of field-run potatoes 
for the car of sound potatoes. Of the 55 sacks sorted out, 20 sacks 
were of tubers that had been injured by the removal of knobs, and 
21 sacks were of those injured by the digging forks. The other 4 
sacks represent shrinkage. The car of sound potatoes was shipped 
to Bakersfield, Cal., where it was examined six days after most of 
the potatoes in it had been harvested. No leaky tubers were found. 
The car was diverted from Bakersfield to Los Angeles, where it was 
reported to be leaking. It was then shipped to El Centro, Cal., 
where the potatoes were examined by the writer. The merchant to 
whom the potatoes were sold said that they arrived in fair condition 
