June 12 White Mountain Research Station, Bishop, Inyo Co., California. I am doing of the four maintaining weight; Three are from triple habitat and one is from wolf halo. Of eight animals on Blackbrush, only two are maintaining weight; one of 4 from Knyghton Range and one of 4 from Wolf Halo. Yet order are standing on thryplex. I am wondering if individual preference may not account for the difference in response to diet rather than either habitat or heredity's of the original 64 animals, I do not expect more than 32 to reach the half way mark of this experiment in depuration. Life at the station is rather routine; going out after plants in no afternoon, feeding and weighing animals at night. Last week the station manager was away, first at a first aid class, then to Berkeley. Now he has returned - with yet more surplus equipment - and sits in his office with nothing to manage, save checking the stations on White Mountain twice daily by radio. Occasionally a shipment of animals is sent up the hill, but usually little goes on. More time should be spent upgrading our animal quarters here, and acquiring some non-redundant