This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1893 Excerpt: ...Fellow in the Owens College, and J. A. Harker, D.Sc. (Tubingen), Berkeley Fellow in the Owens College. Communicated by Professor Arthur Schuster, Ph.D., F.R.S 37 General, Morphological, and Histological Index to the Author's Collective Memoirs on the Fossil Plants of the Coal Measures. Part III. By William Crawford Williamson, LL.D., F.R.S., 4c., Foreign Member of the Royal Swedish Academy; Corresponding Member of the Royal Society of Gottingen 54 Notes on Wulftnia Carinthiaca, Jacquin. By James Cosmo Melvill, M.A., F.L.S 75 On the K-partitions of the R-gon. By the Rev. Thos. P. Kirkman, M.A., F.R.S 109 On the Osmotic Pressure of Solutions of Finite Concentration. By Thomas Ewan, B.Sc., Ph.D 130 On the Treatment of Sewage with Basic Per-Salts of Iron under varying conditions. By Harry Grimshaw, F.C.S 143 An Analysis of the Klectro-Motive Force and Current Curves of a Wilde Alternator, under various conditions. By Julius Frith, Hegin-bottom Physical Scholar of the Owens College. Communicated by Arthur Schuster, Ph.D., F.R.S 151 PAGE On the Primary Structure of the Stem of Calamites. By Thomas Hick, B.A., B.Sc., Assistant Lecturer in Botany, Owens College. Com-municated by F. E. Weiss, B.Sc., Professor of Botany in the Owens College 158 On the Instantaneous Pressures produced in the Explosion-Wave. By H. B. Dixon, F.R.S., Professor of Chemistry, and J. C. Cain, B.Sc., 1851 Exhibition Scholar in the Owens College 174 On the Influence of the Configuration and Direction of Coast Lines upon the Rate and Range of the Secular Magnetic Declination. By Henry Wilde, F.R.S 181 A Sketch of the History of the Canal and River Navigations of England and Wales, and of their present condition, with suggestions for their future development. By Lionel B. Wells, M.Inst.C. E. Co...