RED TURPENTINE BEETLE IN ITASKA PARK Wi 
two hundred yards the infestation dropped to 52 per cent and at four 
hundred yards to 8 per cent. Similar conditions existed at Douglas 
Lodge, where unpeeled green logs for cabin construction were left 
piled in a Norway pine grove during the summer. 
In the SW% of the SW% of Section 3, where logs were cut for 
cabin construction in 1920 and left piled for some time, 23 per cent 
of the trees near the piles were infested. Other plots in the area from 
which the logs were cut showed an infestation of 9 per cent. Within 
500 yards from the cutting, the infestation was reduced to zero. At 
Nicollet cabin the infestation next to the cabin was 66 per cent, 
at two hundred yards 21 per cent, and at four hundred yards 7 per cent. 
The greatest infestation was always found about spots where logs 
had been piled, but a very decided relation was also observed between 
the presence of stumps and beetle infestation. Where there were 
stumps the trees in the vicinity were always more or less infested. 
The time of greatest beetle infestation appeared to be the second sea- 
son after the trees were cut. As a rule the infestation near stumps 
did not exceed 10 per cent. 
TABLE IJ. INFESTATION IN DIFFERENT PARTS OF ITASCA PARK 
Location No. plots Stumps Percentage Norway pine infested 
La Salle Trail 2 Present 14 
Cabin Log Trail Sec. 3 6 Present 12 
Cabin Log Trail Sec. 3 3 None o (No recent cutting near) 
Old mill site 3 Present 53 (Beetles attracted by green logs) 
East of Mary Lake 3 Present 8 
Nicollet cabin 3 Present 31 (Beetles attracted by green logs) 
Kelley Trail 2 Near 3 
Bohall Lake 2 Present 10 
NEY Sec. 15 I Present 30 
Garrison Pt. 2 Present 11 (All tunnels very old) 
Forestry School 2 Near 6 
Pritchett’s Grove 2 None 5 (All tunnels in burned trees) 
Preacher’s Grove 5 None 6 
Near Peace Pipe Springs 1 None ) 
De Sota Cabin 2 None 3 (in path of 1913 fire) 
Ockerson Heights 3 Near 6 
Budd Lake I Near 6 
East of S.W. cabin 4 None 9 (Edge of burn) 
Windfalls and trees injured by fire also appeared to attract the 
beetles. When a windfall lay against the base of a standing Norway 
pine the standing tree was almost always infested. Wherever the 
