PUBLICATIONS OF THE AMERICANORNITHOLOGISTS' UNION FOR SALE AT THE FOLLOWINC PRICES: The Auk. Completeset, VolumesI-XXVIII, (1884-1911) in origi- nal covers,$96.00. VolumesI-VI are soldonly with complete sets,other volumes,$3.00 each; 75 centsfor singlenumbers. Index to The Auk. (Vols. I-XVII, 1884-1900) and Bulletin of the Nuttall OrnithologicalClub (Vols. I-VIII, 1876-1883),8vo, pp. vii -t- 426, 1908 Cloth, $3.75; paper,$3.25. Check-List of North American Birds. Third edition, revised, 1910. Cloth, 8vo., pp. 426, and 2 maps. $2.50, net, postage 25 cents. Secondedition, revised,1895. Cloth, 8vo, pp. xi •- 372. $1.15. Original edition 1886. Out of print. Abridged Check-List of North American Birds. 1889. (.4bridged and revised/tomt• originaledition). Paper,8vo, pp. 71, printed on one sideof the page. 25 cents. Pocket Check-List of North American Birds. (.4bridgedfrom t• thirdedition). Flexible cover, 3• X 5• inches.25 cents; 10 copies for $2.00. Code of Nomenclature, Revised edition, 1908. Paper, 8vo, pp. lx•. 50 cents. Originaledition, 1892. Paper,8vo, pp. iv -]- 72. 25 cents. Address JONATHAN DWIGHT, Jr. 134 W. 71st St., New York City Amcricafi!]rfiithelo:is[' Idfiiofi Check-List of North American Birds Last Edition, 1910 Cloth, 8vo, pp. 430 and two maps of North America, one a colored,faunal zone map, and one a locality map. The first authoritative and complete list of North American Birds published since the secondedition of the Check-List in 1895. The ranges of speciesand geographicalraces have been carefully revised and greatly extended,and the namesconform to the latest rulings of the A. O.U. Committee on Nomenclature. The numbering of the speciesis the same as in the second edition. Price, including postage, $2.75. POCKET EDITION A pocket Check-List (3• by 5t inches) of North American Birds with only the numbersand the scientific and popular names. Alternate pages blank for the insertion oœnotes. Flexible covers. Price, including postage,25 cents; or 10 copiesfor $2.00. Address JONATHAN DWIGHT, Jr. 134 W. 71st St. New York City .