6 BULLETIN 1229, U. S. DEPARTMENT OF AGRICULTURE. 
as not impossible. The infested patches first seen were clo>e by the 
outlet of Siltcoos Lake, which lies about 4 miles distant, in the midst 
of the cultivated area. Diseased cultivated plants might conceivably 
have gotten into the lake and been carried down the stream. Be- 
coming stranded, they might then have been blown or otherwise 
carried to the spots where the disease was observed. The abundance 
of the disease in remote places and in spots not easily reached in 
this way, however, would seem to be negative evidence. For ex- 
ample, a high percentage of diseased plants occurred on a sand hill 
about 50 feet high which was covered with vegetation. 
In the light of later observations, especially, the possibility of 
infection having spread from cultivated fields does not seem very 
great. On the contrary, the results of the survey seemed to indicate 
that the disease has been present on the wild plants for many years 
and that it is passing to the cultivated strawberries. The following 
few cases may be mentioned specifically as apparent illustrations: 
A grower living in Bandon, Oreg., set out young strawberry plants 
from Portland, where the disease is not known to occur, in the 
spring of 1920. No trouble was noticed until late in the growing 
season, when the nematode disease was found affecting a few plants. 
B}^ October, 1921, 25 per cent of the original plants and quite a 
number of young plants started from the old ones were found dis- 
eased and had been pulled out and burned. The disease was found 
in abundance on wild strawberries within 50 feet of the cultivated 
patch and from there on for a distance of 2 J miles, which was as far 
as the search was continued. 
Another grower, living just outside Bandon and within 200 yards 
of the ocean beach, obtained plants in 1919 from a grower in Bandon. 
The nematode disease developed quite heavily on this planting the 
first season, and in 1920 it became so severe that the entire patch was 
plowed up and planted to other crops. The wild-strawberry plants 
in the pasture adjoining, and even inside of the fence surrounding 
this patch, were extensively affected by the nematode disease. A 
visit to the patch of cultivated strawberries in town from which this 
planting had been started failed to reveal any evidence of the nema- 
tode disease among them, nor had the grower ever noticed any 
malady of the sort. 
Still another grower had in 1919 moved a strain of strawberries 
from a farm a few miles east of Bandon, where it had been main- 
tained for eight years without any evidence- of the nematode disease. 
to another farm -U miles south of Bandon and 1J miles bark from 
the ocean beach. In 1920, the next season alter the strawberries were 
moved to the new location, a slight amount of injury from the nem- 
atode disease was noticed, and in 1921, 2 per cent of the plants were 
rather severely affected. No wild strawberries were known to be near 
the berry patch east of Bandon, although they were quite numerous 
in the region of the farm south of town. The nematode disease has 
been found quite abundantly on wild strawberries ;<t a point 3 miles 
from this farm. No examinations for the disease on the wild plants 
have been made closer to the farm than this, though there is every 
possibility that it docs occur on the wild plants very much nearer to 
this farm. 
Certain unusual observations related to the dissemination of the 
ase m:r. be worthy of record. A plant of Fragaria cMUh nsis was 
