Of 136 dens dug out directly for hibernating squirrels and 27 summer and brood dens dug, in no case was a store found in a summer den. Out of 41 hibernation nests of wild squirrels examined, 21 contained a store. In only 1 case was a store found definitely in the den of a [female] squirrel. This might be accounted for by the fact that the old [male] appear a week or 10 days earlier than the [female] and young of the previous year, when the weather is frequently wintry and food is hard to find. Seventeen kinds of seeds, bulbs, and tubers were found stored, with Collinsia, potato, and wheat leading in frequency. A surprising observation was that of the discovery of the bulbs of the death camas in one store, a plant considered dangerously poisonous.