BIBLIOGRAPHICAL SERIES

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

BIOLOGICAL SERIES

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

No. II. THE QUANTITATIVE METHOD IN BIOLOGY. By

the late Professer Julius Macleod, D.Sc. lUustrated. 158. net.