CONTENTS {continued). 



PAGE 



JX. On the Solubility of Salts in Water at High Temperatures. By 

 William A. Tilden, D.Sc. Lond., F.R.S., Professor of Chemistry' in 

 the Mason Science College, Birmingham, and W. A. Shenstone, 

 F.I.C., F.C.S., Lecturer on Chemistry in Clifton College, Bristol . 345 



X. On the Determination of the ISTumber of Electrostatic Units in the 

 Electromagnetic Unit of Electricity. By J. J. Thomson", M.A., 

 Fellow and Assistant Lecturer of Trinity College, Cambridge . . 346 



XI. On the Molecular Weights of the Substituted Ammonias. No. I. 

 Triethylamine. By James Dewar, M.A., F.R.S., Jacksonian 

 Professor, Cambridge, and Alexander Scott, M.A., D.Sc. . . 347 



XII. Contributions to the Anatomy of the Hirudinea. By Ale red Gtbbs 

 Bourne, B.Sc. Lond., University Scholar in Zoology, and Assistant 

 in the Zoological Laboratory, University College, London. . . 350 



XIII. Reply to a Note by Professor J. E. Reynolds on the Atomic Weight 



of aiucinum or Beryllium. By T. S. Humpidge, Ph.D., B.Sc. . 358 



XIV. Remarks on Spectrum Photography in Relation to New Methods of 



Quantitative Chemical Analysis. Part I. By W. N. Hartley, 

 F.R.S.E., Professor of Chemistry, Royal College of Science, Dublin . 359 



XV. On a New Standard of Illumination and the Measurement of Light. 



By W. H. Preece, F.R.S. 359 



List of Presents • ^ • ■ • ... . . . . 360 



Observations on the Colouring-matters of the so-called Bile of Invertebrates, 

 on those of the Bile of Vertebrates, and on some unusual Urine Pigments, 

 &c. By Charles A. MacMunn, B.A., M.D. ...... 370 



Obituary Notices : — 



Professor William Stanley Jevons i 



Friedrich Wohler xii 



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