CONTENTS. 



MEMOIRS. 



PAGE 



I. On Rachioptevis cylindrica Will. Plate i. By Thomas Hick, 



B.A., B.Sc, A.L.S pp. 1-14 



II. On the Structure and Contents of Anthoceros tuberosus Taylor. 



Plate 2. By J. H. Ashworth, B.Sc pp. 1-6 



III. On Methods of Determining the Dryness of Saturated 



Steam and the Condition of Steam Gas. By Osborne 

 Reynolds, M.A., LL.D., F.R.S pp. 1-14 



IV. Hymenoptera Orientalia, or Contributions to a knowledge 



the Hymenoptera of the Oriental Zoological Region. 



Part V. Plates 3 and 4. By Peter Cameron . . pp. 1-144 



V. On the Ampullas in some specimens of Millepora in the 

 Manchester Museum. By Sydney J. Hickson, M.A., 

 D.Sc, F.R.S pp. 1-4 



VI. Descriptions of New Species of Brachiopoda and Mollusca 

 from the Millstone Grit and Lower Coal Measures 

 of Lancashire. Plate 5. By Herbert Bolton, 

 F.R.S. E pp. 1-7 



VII. Descriptions of Thirty-four Species of Marine Mollusca 

 from the Arabian Sea, Persian Gulf, and Gulf of 

 Oman. Plates 6 and 7. By J. Cosmo Melvill, M.A., 

 F.L.S pp. 1-25 



VIII. Hypoiodous Acid and Hypoiodites. By R. L. Taylor, 



F.C.S pp. 1-20 



IX. Some further investigation of Fossil Seeds of the genus 

 Lagenostoma (Williamson) from the Lower Coal 

 Measures, Oldham. Plate 8. By John Butterworth, 



F.R.M.S pp. 1-4 



X. On Continuity. By Horace Lamb, M.A., F.R.S. .. pp. 1-9 

 XL The Costs of Sea Transport in proportion to Values of 



Cargoes. Plates 9 to 12. By A. W. Flux, M.A... pp. 1-1S 

 XII. The Fall in Prices during the past Twenty Years. Plates 



13 to 15. By A. W. Flux, M.A pp. 1-15 



