CONTENTS.
On the Florida Ground Owl (Speotyto floridanæ). By William Palmer. (Plate II.) 99
The Taxonomic Value of the Tongue in Birds. By Frederic A. Lucas 109
Notes on Some of the Birds of Southern California. By Florence A. Merriam 115
The Law which Underlies Protective Coloration. By Abbott H. Thayer 124
Descriptions of a New Horned Lark and a New Song Sparrow, with Remarks on Sennett's Nighthawk. By Louis B. Bishop. 129
An Apparently New Chordeiles from Costa Rica. By George K. Cherrie 135
Gätke's 'Heligoland.' By J. A. Allen 137
A Revision of the North American Horned Owls, with Description of a New Subspecies By Witmer Stone 153
Recent Literature.—The 'Birds" of 'The Royal Natural History.' 156; Saunders and Salvia's 'Catalogue of the Gaviæ and Tubinares,' 160; Salvadori's Catalogue of the Chenomorphæ, Crypturi, and Ratitæ. 162; Chapman on Changes of Plumage in the Dunlin and Sanderling, 164; Chapman on the Plumage of the Snowflake, 165; Allen on Alleged Changes of Color in the Feathers of Birds without Moulting, 166; The Mockingbird and Yucca aloifolia, 167; Loomis on California Water Birds, 168; Publications Received, 169.
General Notes.—Brünnich's Murre at Cape Charles, Virginia, 171; The Parasitic Jaeger near Cleveland, Ohio, 171; Puffinus tenuirostris, off San Diego, California, 171; The Skull of the Young Cormorant, 172; Clangula hyemalis at San Diego, California, 172; Occurrence of the Great White Heron at Escondido, California, 172; Note on the Flexor hallucis brevis in the Night Heron (Nycticorax nycticorax nævius), 172; Porzana noveboracensis near Ottawa, Canada, 172; Crymophilus fulicarius in Maine, 173; Crex crex in Maine, 173; Baird's Sandpiper in Michigan, 174; Western Sandpiper (Ereunetes occidentalis) more abundant than the Semipalmated (E. pusillus), 174; Woodpeckers' Tongues—a Plea for Aid, 174; Pinicola enucleator in Westchester County, N. Y., 175; The Pine Grosbeak at Poughkeepsie, N. Y., 175; The Pine Grosbeak (P. enucleator) in New Jersey. 175 Abnormal Plumage of a Pine Grosbeak, 176; The American Crossbill at Sea, 176; Harris's Sparrow in Spring Dress in Autumn, 176; A Brown Thrasher (Harporhynchus rufus) in Massachusetts in Winter, 176; A few Notes from Maine. 177; Three Winter Notes from Longwood, Mass., 178; Bird Notes from Erie County, New York, 178; Virginia Notes. 179; On Birds reported as rare in Cook County, Ill. 179; Additions to the Avifauna of Tennessee, 181; Sundry Notes, 182.
Correspondence—Some Questions of Nomenclature, 183; A Question of Nomenclature, 190; Ord's Zoölogy Again, 192; Chen hyperborea and C. nivalis, 195.
Notes and News—Obituary, Dr. Willard Lorraine Maris, 193; The Delaware Valley Ornithological Club, 193; The Michigan Ornithological Club, 194|48}}; New Edition of Ridgway's ' Manual of North American Birds,' 194; 'The Feather,' 195; The Seebohm collection of Birds, 195; The Field Columbian Museum Expedition to Africa, 196
'THE AUK.' published as the Organ of the American Ornithologists' Union, is edited by Dr. J. A. Allen, with the assistance of Mr. F. M. Chapman.
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