2. I'rom evidence at our command it 
would appear that these infestations 
came from Wisconsin ( in the case of 
Xurserv A this is an established fact). 
3. Our state forest service estimates 
that there is approximately twenty-five 
billion feet of merchantable white pine 
standing in Minnesota, worth about 
twenty-five millions of dollars. Thou- 
sands of young white pine trees are 
annually planted in an efifort to reforest 
our denuded timber lands. Is Minnesota 
willing to allow this menace to go un- 
^ checked ? 
4. The tardy development of this 
disease in pines makes the proposition 
of eradication a difficult one, calling for 
survey and inspection year after year for 
a long period. 
5. As far as inspection and eradica- 
tion in ^Minnesota nurseries is concerned, the State 
Inspection Service can handle the work, provided 
enough funds are available, but more extensive po- 
lice power should be granted the State Entomolo- 
gist to cover this emergency. He should be em- 
powered to destroy all suspected trees and hushes 
wherever found whether the disease is apparent or 
not and to prohibit the entrance into Minnesota and 
transportation within this state of any of the five- 
leaf pines. This additional police power of State 
Inspectors is urged in a recent bulletin issued by 
the Bureau of Plant Industry, U. S. Department 
of Agriculture. 
6. Xurserymen, Park Commissioners, and citi- 
zens generally should a])preciate the seriousness of 
the situation and should refrain from buying or 
planting white pine for a number of years. If any 
five-leaf ])ines on their jmemises appear to he dis- 
eased they should communicate at once with the 
Experiment Station. Currants and gooseberries are 
best planted at a distance from five-leaf ])ines. 
Fig. 6. Sketch of St. Croix River from Afton to the upper dam, the 
area covered hy our survey on jMinnesota side. Crosses 
at Dry Creek, Taylors Falls, Pine Hollow Creek and Lake- 
land mark the four affected localities found this summer. 
