Clangula clangula americana. Lake Umbagog, New England. Nest /10 (2868), June 3, 1896, coll.Wm.Brewster. In- ferential & by down. No bird. Nest deserted evidently. Far adv. in inc. Outlet. Found June I, by W. visited several times, no bird seen, eggs always cold; embryos dead & soft. Nest in large, old red maple stub standing in water about 40 yds.fr.(S.W.of) en- trance (in outlet of) to Leonard's P. Nest in crevice I5 ft.above water. Two photos.of stub taken. Nest /5 (2376), June 6, 1896, coll.Wm.Brewster. Female twice started from nest. Near hatching. In maple stub over water about 100 yds s.w.from the river entrance to Leonard's Pond and within 30 yds of nest #2868 (cf. Journal for further details). Nest /19 (3018), May 15, 1897, coll.Wm.Brewster. Female started from nest and well seen. Eggs all perfectly fresh. In old but still living yellow birch standing at water's edge at mouth of Peaslee's Brook. Entrance hole a slit 2 ft.high by I ft. wide, 20 ft.above water, n.side of tree. Eggs heaped on one anoth- er & bedded in down. Only one pair of birds seen near nest. (Cf. Journal). Twelve eggs (3019), May 24, 1897, coll.Wm.Brewster. Fe- male started from nest & well seen. Eggs in every stage from fresh to 6 to 10 days inc. In maple stub at Tidwell's Point, 15 or 20 ft.from shore. Entrance hole on e.side, small, narrow with ragged edges, 20 ft.above water. Nest 2 ft.below entrance. Female sat closely not moving when we rapped on trunk. Tufts of down clung to trunk near hole. Ducks of different kinds said to have nested in this tree for 15 years or more.