Several times in the fall of 1945, in the above-mentioned grove, the writer found pods of the coffee tree lying in the runs of the voles. These pods were sometimes entire, but more often they had been gnawed; frequently only part of a pod remained, indicating that the voles were storing or feeding upon the seeds, although the possibility that the mice were storing food did not occur to the writer at the time. Three times, seeds of other plants were found piled at the entrances of the burrows of voles. Twice these piles consisted of from 50 to 70 seeds of the common dandelion (_Taraxacum officinale_). The third pile was composed of 20 seeds of the giant ragweed (_Ambrosia trifida_). A pasture of Canadian bluegrass (_Poa compressa_), wild millet (_Echinochloa crusgalli_), sedges (_Scirpus_ spp.), and clover (_Trifolium_ sp.) in Atchison County, Kansas, was examined in November, 1945. This area was the home of a dense population of prairie voles. Wherever a path of the voles crossed a deep imprint of a horse's hoof, there was a collection of cuttings from the horizontal stems of the clover which bordered the runways. Some of the cuttings may have been made by lemming mice (_Synaptomys cooperi_) which were also common in the area. Several kinds of voles store food. Bailey (1920) wrote of the caches of _Microtus pennsylvanicus_ in North Dakota, where, in one locality, this vole was known as the bean mouse. He stated that the Indians dug up beans (_Falcata comosa_) and the tubers of the Jerusalem artichoke (_Helianthus tuberosus_) which the voles had stored. Lantz (1907:17) found a cache of the roots of wild morning glory (_Convolvulus sepium_) laid away by _Microtus pennsylvanicus_. Nelson (1893:140) wrote that, as winter approached, _Microtus operarius_ gathered small bulbous roots, sometimes storing a peck or more in a single cavity. Fisher (1945) in Missouri found a gallon of the fruits of the horse nettle (_Solanum carolinense_) stored in a hollow stump by the prairie vole. Kennicott (1857:99) found five or six quarts of roots of two species of spike-flower (_Liatrus_), _Helianthus_, and various grasses among the winter provisions of the prairie vole in Illinois. PLANTS USED AS FOOD AND AS COVER Table 3 lists, according to their families, the species of plants which the prairie vole was observed to use for food. The same species are sometimes used as cover. The majority of the plants are in three families: the grass family (Graminae), the pulse family (Leguminosae), and the composite family (Compositae).