J.G.Hall 1952 31 July 21 Sagehen Creek, 3mi.NW Hobart Mills,Nevada Co., Calif. back from shore on the W side of the rocks, most of the stumps here are '48-ers and '49-ers. As you go downstream the recent ones are most abundant, especially 1952. At least half of the 1952 cuts are deep-snow cuts. Couple of 7-inchers darted upstream from hard-bottom section 7 stream just below main dam. Creepers now has a nest under some loose bark of same dead l'pole where we saw Hairies feed- ing young on June 27. Hairies have now flown the coop. Probably be good idea to map the bottom-types as well as rel. water velocities when mapping these colonies. Maybe just bottom type, too, since this re- lects stream flow. Many caddisfly- larvae foraging on silt-bottom of shallow, land-locked pools left by receding water-level. Odd that beaver ignore almost all the new sprouts. The stumps producing the sprouts would probably average 2½