Journal 11. 28Feb. Strawberry Canyon, U.C. Campus, Berkeley Alameda Co., Calif. in the short-grass areas since insufficient cover of above surface runways & other rodents. Other should be found in higher grassy tufts about shrubs and bushes. Artemisia, (pale grey, lacy leaves) is plant of chaparral most often in relation to open grassy areas. Principally found along exposed edges of chaparral. It apparently tolerates dry conditions less than grass but more than other elements. I brush cover. Oaks appear higher up slopes than lows. Where great variety of plants occur along edge of brushy area is where greatest number of rodents will occur according to S. Benson. Ascend of 5 slope to grove of introduced pines made. Here dense shade and thick mat of needles precluded development of any grass or shrubs. Therefore very little food or shelter for rodents. Even squirrels, according to S. Benson need several species of trees in which to find enough and suitable food. Such an area as this grove, which lies just below upper part of Cycloton road, should be quite barren of mammals. Eucalyptus grove visited next just across