ALFALFA WEEVIL. o 
certain wagon roads, rather than in the direction of prevailing winds, 
railroads, or streams. This point is well illustrated by the road to 
St. Charles, Idaho. Here the insect has gone 100 miles along a main 
road, across mountain ranges, regardless of prevailing winds, and far 
from railroads. 
That no one knows exactly how the weevils spread, may be inferred 
from the conflicting quarantine regulations designed by uninfested 
>\SALTLLAKE CITY 
&) N} 
Ona t ies 
Su Y/fey 
Fic. 3.—Map of portions of Utah, Wyoming, and Idaho, showing the district infested by the alfalfa weevil. 
The circles are 50 and 100 miles from Salt Lake City. (Original.) 
States to exclude them. Thus, Arizona forbids the importation of 
nursery stock; California requires its fumigation at origin and delivery 
and forbids packing with hay, straw, or rushes; Idaho differs from 
California in permitting the use of rushes; Montana requires official 
fumigation at the point of origin; Oregon forbids the use of rushes and 
forage plants as packing; Arizona prohibits the importation of fruits; 
Montana, the importation of both fruits and vegetables from April 1 
to October 31, except such as are inspected at designated points by 
the State of Utah from August 1 to October 31. Arizona and Oregon 
