BRITISH ORNITHOLOGISTS’ UNION. 
LIST OF PUBLICATIONS. 
THE IBIS. A QUARTERLY JOURNAL OF GENERAL 
ORNITHOLOGY. 
Illustrated with Coloured and Plain Plates. Published 
Quarterly (January, April, July, October). Size, 8vo (5|x 
8 | inches), 200 to 300 pages in each Number. Price from the 
commencement of 1921, 12/6 net each Number. 
FIRST SERIES, 1859-64. 6 vols. (Out of print.) 
SECOND SERIES, 1865-70. 6 vols. 
THIRD SERIES, 1871-76. 6 vols. 
FOURTH SERIES, 1877-82. 6 vols. 
FIFTH SERIES, 1883-88. 6 vols. (Except Yol. 6, out of print.) 
SIXTH SERIES, 1889-94. 6 vols. (Except Yols. 1 & 2, out of 
print.) 
SEVENTH SERIES, 1895-1900. 6 vols. 
EIGHTH SERIES, 1901-1906. 6 vols. 
NINTH SERIES, 1907-1912. 6 vols. 
TENTH SERIES, 1913-1918. 6 vols. 
ELEVENTH SERIES. Yol. 1, 1919. Yol. 2, 1920. 
Single numbers of Series 5-11 up to Vol. 2, 1920 .. 10/- net each. 
Yol. 3, 1921, 50/- Single numbers 12/6. 
Annual subscription, post free, 52/- net. (To Members 10/- net.) 
Binding Cases, price 3/6 each. 
Binding including Case, price 10/6 each, postage 1/3. 
Binding of back volumes 12/- each. 
All communications regarding purchase of any of the 
above publications should be addressed to the Agents of the B.O. U., 
WHELDON & WESLEY, LTD, 
INCORPORATING 
WILLIAM WESLEY & SON, 
28 ESSEX STREET, STRAND, LONDON, W.C. 2. 
