LANDOLT (Dr. HANS). THE OPTICAL ROTATING POWER OF ORGANIC SUBSTANCES AND ITS PRACTICAL APPLICATIONS. 8vo. Pp. xxi + 751. 83 Illustrations. 31s. 6d. net.
LANGENBECK. THE CHEMISTRY OF POTTERY. Small 12mo. Pages viii + 197. Illustrated. Out of Print. 8s. 6d. net.
LEAVENWORTH (Prof. W. S., M.Sc.). INORGANIC QUALITATIVE CHEMICAL ANALYSIS FOR ADVANCED SCHOOLS AND COLLEGES. 8vo. Pages vi + 154. 6s. 6d. net.
LEBLANC (Dr. MAX). THE PRODUCTION OF CHROMIUM AND ITS COMPOUNDS BY THE AID OF THE ELECTRIC CURRENT. 8vo. 122 Pages. 5s. net.
LIVERPOOL MARINE BIOLOGY COMMITTEE. MEMOIRS ON TYPICAL BRITISH MARINE PLANTS AND ANIMALS. Edited by W. A. Herdman, D.Sc., F.R.S. All demy 8vo, stiff boards.
1. Ascidia. By W. A. Herdman. With 5 Plates. Price 2s. net.
2. Cardium. By J. Johnstone, Fisheries Assistant, University College, Liverpool. With 7 Plates. Price 2s. 6d. net.
3. Echinus. By Herbert Clifton Chadwick, Curator of the Port Erin Biological Station. With 5 Plates. Price 2s. net.
4. Codium. By R. J. Harvey Gibson, M.A., F.L.S., Professor of Botany in University College, Liverpool, and Helen P. Auld, B.Sc., With 3 Plates. Price 1s. 6d. net.