82. Aug. 15, 1907. Alameda Island from San Francisco, cal. Condition: Moderate temperature; NW wind very light; forenoon; clear. Near the roundhouse when going to the city this morning, were a good many gulls on the sand and also a flock of about 8 Sym- phemia semipalmata which flew a short distance as the tram passed. At the edge of the nearby marsh a flock of 30 or 40 Chenuenius hudsonicus arose. Yesterday morning I noted a Symphemia semipalmata near West Alameda Station, coming from the city about noon. Today a flock of 30 or so gulls rose from the water as the boat neared them off Goat Island; they were adult Larus occidentalis, and both adult and young of smaller lighter-mantled gulls. About the Ferry Bldg. on the San Francisco side two or three adult Larus occidentalis and one or two adult Larus delawarensis were observed flying about the pier and swooping down to the waters.