Frequency of
Species Ten piles of cuttings occurrence
_Agropyron repens_ 1 0 0 2 0 0 6 19 0 4 13
_Poa annua_ 0 0 0 0 0 0 0 0 0 0 00
_Bromus carinatus_ 0 0 0 0 0 10 0 0 0 0 04
_Bromus inermis_ 0 0 0 0 0 0 0 0 0 0 00
_Medicago sativa_ 40 14 30 30 31 5 0 0 21 4 73
_Lepidium densiflorum_ 0 0 0 0 0 0 0 0 0 0 00
_Galium aparine_ 0 0 0 0 1 0 1 0 0 0 01
_Lactuca scariola_ 6 2 1 2 5 0 0 0 2 4 09
[Footnote A: Analysis made on May 12, 1946, on an area 20 x 80 yards, at
Lawrence, Kansas.]
[Footnote B: Each of the first ten vertical columns gives the
composition of one pile of cuttings. The last column gives the
percentage of occurrence in the piles of cuttings of each species of
plant in the area. Place and date for data in table 2 same as for table
1.]
Approximately one out of every ten voles caught in snap traps had a
piece of plant in its mouth. Occasionally a vole took a piece of food
into a live trap. Evidently the food is not always eaten where it is
procured. Grasses of the genus _Poa_ are the kinds most frequently found
in the mouths of dead voles. _Bromus carinatus_, _B. inermis_ and sweet
clover (_Melilotus alba_) were found in the runways. The pulpy fruit of
the horse nettle (_Solanum carolinense_) was found partly eaten,
especially near the entrances to underground passages.