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JOURNAL OF ECONOMIC ENTOMOLOGY 
[Vol. 16 
and can also supervise the building of it, is the more likely to have a 
barrier which is not only pest-proof but violation-proof. 
The Quarantine and the Administration 
A second phase of the quarantine question relates to the viewpoint of 
the administration. The board or official entrusted with the legal 
power to erect and enforce regulatory measures may be regarded as a 
Janus-headed individual, with one face toward the public and the 
other turned to his scientific staff. Naturally he will have an attitude 
of mind slightly different from that of the scientist, since of necessity he 
is compelled to think on both his fronts. 
When a quarantine is considered in regard to any pest or disease the 
single track mind of the scientist runs thus: “We can keep this pest 
within bounds by applying a quarantine.” The mental attitude of the 
administrator is, “Is it necessary to do this? Could a system of in¬ 
spection be devised to take care of the stiuation? Would a campaign of 
education serve the purpose ? Can we make the quarantine effective if 
it is applied? Will the results justify the expenditure of money, the 
disturbance of agriculture and trade, and interference with individual 
freedom?” 
Past performances indicate that this Missourian attitude of mind may 
inevitably be expected from the administration; hence it is of vital 
importance that in the early stages of the problem its various factors be 
subjected to clear thinking and careful weighing, and that close study 
be made of the effects that are likely to follow upon the interjection of a 
new and disturbing force into the domain of public interest. 
Factors for Success in Quarantine Methods 
We may next turn to some features of the quarantine itself. Let us 
suppose that in a state where the legal authority and administrative 
functions have been amply provided for, a new insect or disease makes 
its appearance. Hasty observation indicates that the pest is likely to 
be important and that a quarantine is required. It would seem that 
under such conditions no difficulty could arise. But our past experi¬ 
ences show that in the placing of such a quarantine there are likely to 
be two points of weakness. 
The first involves the extent of infestation. Until that is known with 
some accuracy a quarantine may be merely an empty gesture. It may be 
argued that in such cases a chance has to be taken, that the necessities of 
the situation demand immediate action even at the risk of seeming to 
