BIBLIOGRAPHICAL SERIES

No. I. THE CATALOGUE OF THE CHRISTIE COLLECTION. Compiled under the direction of C. W. E. Leigh, M.A. £1 : is. net; 50 copies on hand-made paper, bound in half-morocco, £ 2 : 2s. net.

BIOLOGICAL SERIES

No. I. THE HOUSE FLY. Musca domestica (Linnæus). By C. Gordon Hewitt, D.Sc. [ Ou t of print.

No. II. THE QUANTITATIVE METHOD IN BIOLOGY. By

the late Professor Julius Macleod, D.Sc. Illustrated. 15s. net.