In the interests of exact bibliography, the Society takes cognizance of all publications issued either wholly or partly under its auspices. Each author of a memoir published in THE NATIONAL GEOGRAPHIC MAGAZINE receives 25 copies, and is authorized to order any number of additional copies at a slight advance on the cost of press-work and paper; and these separate brochures are identical with those of the regular edition issued by the Society. Contributors to the magazine brochures are authorized to order any number of copies of their contributions at a slight advance on cost of press-work and paper, provided these separates bear the original pagination and a printed reference to the serial and volume from which they are extracted; but such separates are bibliographically distinct from the brochures issued by the Society. The _Magazine_ is not copyrighted, and articles may be reprinted freely; and a record of reprints, so far as known, is kept. The following separates and reprints from volume III have been issued: _Editions uniform with the Brochures of the Magazine_. Pages 1-30, plate 1: 150 copies, March 28, 1891. " 31-40, 25 " May 2, 1891. " 41-52, 25 " " 2, 1891. " 53-204, plates 2-20: 250 " " 29, 1891. _Special Editions_. Pages 205-230, plate 21: 50 copies, February 18, 1892. " 231-237, 100 " " 16, 1892. " v, 1,000 " " 19, 1892. " xv-xxxv, 50 " " 13, 1892. _Reprints_. Pages 196-198, 100 copies, January 3, 1892. {vii} PROCEEDINGS OF THE NATIONAL GEOGRAPHIC SOCIETY. (_Abstract of Minutes_.) _March 6, 1891. 49th meeting_. Meeting held in the Assembly Hall of the Cosmos Club. Vice-President Hayden in the chair. Attendance, 50. Captain E. C. Hore, master mariner, delivered an address on "A narrative of ten years' work and travel in the African lake region." _Abstract entitled "The Heart of Africa" printed in this volume, pp. 238-243_. _March 13, 1891. Special meeting_. Meeting held in the Lecture Room of the National Museum. Vice-President Ogden in the chair. Attendance, 850. Captain E. C. Hore repeated his former lecture with additions. _Abstract printed in this volume, pp. 243-247_. _March 20, 1891. 50th meeting_. Meeting held in the Assembly Hall of the Cosmos Club. Mr. G. K. Gilbert in the chair. Attendance, 35. Vice-President Greely read a paper on "The cartography and observations of Bering's first voyage." The paper was discussed by Messrs Dall, Blodgett, Littlehales, and Vice-President Hayden. _Printed in this volume, pp. 205-230, pl. 21_. Mr. J. Stanley-Brown presented a paper on "Auriferous sands from Yakutat bay." _Printed in this volume, pp. 196-198_.