PLATE 26. PURPLE SANDPIPER.
Upper: Purple sandpiper on its nest, Spitsbergen, July 2, 1922; presented by Maj. W. M. Congreve.
Lower: Purple sandpipers on the rocks at Scituate, Massachusetts, December 28, 1926; presented by Dr. John B. May.
PLATE 27. ALEUTIAN SANDPIPER.
Upper: Nest and eggs of Aleutian sandpiper.
Lower: Downy young of Aleutian sandpiper. Both photographs taken by Mr. Alfred M. Bailey at Emma Harbor, Providence Bay, Siberia, July 4, 1921; presented by him and by courtesy of the Colorado Museum of Natural History, referred to on page [162].