XIV CONTENTS. 



Page 



7. The Atomic Weiglit of Zirconium. By G. H. Bailet, D.Sc, Ph.D 636 



8. Torsion Balances. By Dr. A. Springer 63& 



9. Integral Weights in Chenaiatry. By T. Sterey Hunt, LL.D., F.R.S. ... 637 



10. On the Action of Light on the Hydracids of the Halogens in the presence 

 of Oxygen. By Arthur Richardson, Ph.D 638 



FRIDA Y, SEPTE3IBER 2. 



1. On the Present Position of the Alkali Manufacture. By Alfred E. 

 Fletcher, F.C.S., F.I.U 638 



2. On the Composition of some Coke Oven Tars of German Origin. By 



Professor Lunge 640 



3. On the Constituents of the Light Oils of Blast-Furnace Coal Tar from 

 Gartsherrie Works. By Watson Smith 640 



4. On the Utilisation of Blast-Furnace Creosote. By Alfred II. Allen, 

 F.C.S 640 



5. A new Apparatus for Condensing Gases by Contact with Liquids. By 

 Professor Lunge 640 



6. The Extent to which Calico Printing and the Tinctorial Arts have been 

 affected by the Introduction of Modern Colours. By Charles O'Neill. . . 640 



7. Exhibition of a new class of Colouring Matters. By Dr. C. A. Martius 641 



8. The Chemistry of the Cotton Fibre. By F. H. Bowman, D.Sc, F.R.S.E., 



F.C.S., F.L.S 641 



Sub-Section B. — Organic Chemistry. 



1. Second Report of the Committee for investigating Isomeric Naphthalene 

 Derivatives 642 



2. Isomeric Change in the Phenol Series. By A. R. Ling 642 



3. The Constitution and Relationship of the Eurhodine and Saffranine Classes 



of Colouring Matters, and their Connection with other Groups of Organic 

 Compounds. By Dr. O. N. Witt 642 



4. On the Constitution of Azimido-Compounds. By Drs. Noeltins and 

 Abt 642 



5. On the Constitution of the Mi.xed Diazoamido-Compounds. By Drs. 

 NoELTiNG and Binder 643 



6. On Methylene Blue and Methylene Red. By Professor Bernthsen 645 



7. On some Xenoene or Diphenvl Products and Reactions. By Professor W. 

 Odling, M.A., F.R.S., and J. E. Marsh, B.A 646 



8. On the Rate of Velocity of Formation of Acetic Ether. By Professor 

 Menschutkin 646 



MONDA Y, SEPTEMBER 5. 



1. The Relation of Geometrical Structure to Chemical Properties. By Pro- 



fessor Wislicenus 647 



2. Note on Valency, especially as defined by Helmholtz. By Professor 

 Armstrong, F.R.S 647 



3. The Solubility of Isomeric Organic Compounds. By Professor Carnellet, 

 D.Sc, and Dr. A. Thomson 647 



