had wandered from their maternal houses, for unknown reasons. On one occasion a young woodrat was caught in a mouse trap set in a meadow, a habitat into which adult woodrats would scarcely be expected to venture. _Feeding_ Rainey (1956) has listed 31 food plants that are used by the woodrat in northeastern Kansas. He has emphasized that each rat usually obtains its food from plants growing in the immediate vicinity of its house, and that individuals thus differ greatly in their feeding, according to the local vegetation. Therefore, with a sufficiently large number of observations, the list of food plants might be greatly expanded, to include most of the local flora, with the exception of the relatively few kinds that have developed strongly repellent properties rendering them unpalatable to herbivores in general. At the quarry where one or more woodrats usually lived beneath metal strips, as described previously (under the heading of "Commensals"), the situation seemed to be especially favorable, despite the fact that the metal offered no insulation from extremes of heat in summer and cold in winter. Perhaps the rat had an alternative nest among nearby boulders, to use when temperature was unendurable beneath the metal. The rat itself, the stored food, and other details of its home life, could be observed with a minimum of disturbance by raising one side of the metal strip momentarily, then carefully lowering it into place. The following observations made in the summer and autumn of 1948 give some idea of the range of food plants stored at any one time and the change as the season progresses. July 12: Bundles of leaves of carrion-flower (_Smilax herbacea_); 15 green pods of honey locust (_Gleditsia triacanthos_) with seeds eaten out; several green fruits of osage orange (_Maclura pomifera_), and several seeds of coffee-tree (_Gymnocladus dioica_). July 24: Bundles of green leaves of osage orange and carrion-flower; many pods of honey locust. August 30: Three large clusters of the fruits of pokeberry (_Phytolacca americana_). October 20: Many small clusters of grapes (_Vitis vulpina_) judged to weigh perhaps one pound in all; several old pods of coffee-tree and a few berries of dogwood (_Cornus Drummondi_) and of pokeberry; a pile of small acorns of chinquapin oak (_Quercus prinoides_); dry seed heads of grass (_Bromus inermis_ and _B. japonicus_). December 22: Many twigs of bittersweet (_Celastrus scandens_) with fruits still attached; several seed heads of sunflower (_Helianthus annuus_); a few acorns of chinquapin oak; fragments of the fruit of osage orange; cured bundles of trefoil (_Desmodium glutinosum_), carrion-flower, and tickle grass (_Panicum capillare_).