4 
ise peat Diseases a the it 
io, aaa all barriers, using a aan stream. Gave up the penta as the o 
u not last over night. Used cyanide on 2 and #2. The part b takes a little 
aa the ground being dry. aes 
_ July 18. Bugs not moving very much in the forenoon. Honewed barr 
southwest corner. 
July 19. Rained all day. aa! 
mule ZO. Barrier stood the rain best on the south, west and east aie 
groove in ¢ was full of mud; d was in good shape, and b was gene goo 
end. Gave up the new ridges. 
July 21. Bugs almost all winged. Renewed barrier. 
July 22. Bugs not aed very much. 
ite 20 
--geem to want to hide. 
places. ieee 
August 4 Bugs not plentiful; a few were on the ridge in the southeast corne 
‘Tar and ridge in fine condition except where weeds were growing on it. 
ree grass; seem to have disappeared somewhere. } 
August 13. Not many bugs; a few in crab-grass in southwest corner. ‘ — 
August 22. Few bugs, and they are in the corn-field, in the crab-grass in 
southwest corner. vt 
Amount of tar used in experiment, 1 barrel, 380 pounds. 
Amount of kerosene oil, 17 gallons. 
Length of old ridge, 85 rods. 
Length of x ridge, 50 rods. 
Length of 0 ridge, 20 rods. 
Length of ¢ ridge, 10 rods. 
Length of d ridge, 10 rods. 
Amount of tar used on first ridge, 1 barrel, 7 buckets. 
