XVI CONTENTS. 



TUESDAY, AUGUST 9. 



Pasje 



1. The Impurities of Town Air. By G. H. Bailey, D.Sc, Ph.D 679 



2. Syntheses with the Aid of Butane and Pentane Tetra-carboxylic Ethers. 



By Professor W. II. Peekin, jun., F.RS 680 



3. Synthesis of Hydrindon Derivatives. By Dr. F. Stanley Kippiitg 680 



4. Heptamethylene Derivatives. By Dr. F. Stanley Kipping 680 



5. Action of Phosphoric Anhydride on Fatty Acids. By Dr. F. Stanley 

 Kipping '... 680 



6. Methyl Salts of Camphoric Acid. By James Walker, PhD., D.Sc 680 



7. The Halogen Addition Products of Salts of Organic Bases. By Leoxaed 

 Dobbin, Ph.D., and James Walker, D.Sc, Ph.D 681 



8. The Production of Acetic Acid from the Carbohydrates. By J. F. V. 

 Isaac, B.A 682 



9. On the Molecular Volumes of Organic Substances in Dilute Solution. 



By W. W. J. NicoL, D.Sc 683 



10. Report of the Committee on Isomeric Naphthalene Derivatives 684 



11. Report of the Committee on the Action of Light on Dyed Colours 684 



12. On the Amount of Hydrolysis in Aqueous Solutions of Salts of Strong 

 Bases with Weak Acids. By Dr. J. Shields 684 



13. A new Method for Measuring the Pressure produced in Gaseous Explo- 

 sions. By Bevan Lean, B.A., B.Sc, and W. A. Bone, B.Sc 684 



14. The Determination of small Quantities of Nitrogen in Soils. By Dr. F. E. 

 Matthews 686 



15. On a Vanadiferous Lignite found in the Argentine Republic, with Analysis 



of the Ash. By Professor John J. J. Kyle, ScD 686 



16. Sewage Precipitation. By G. Caerington Purvis 687 



WEDNESDAY, AUGUST 10. 



1. Atomic Weight of Boron. By W. Ramsay, Ph.D., F.R.S., and Emilt 



Aston, B.Sc. (Lond.) 687 



2. On the Preparation of pure Glucina, and the Atomic Weight of Glucinum. 



By Dr. J. Gibson 689 



3. On the Assumed Potential Difference between a Metal in the Molten and 



the Solid State. By Professor W^. Ostwald 689 



4. Note on Exact Weighing. By Dr. J. Gibson 690 



6. Analysis of Manganese Nodules. By Dr. J. Gibson 690 



6. On the Iodides of Sulphur. By Professor Herbert McLeod, F.R.S 690 



7. On Solutions of Iodine. By W. W\ J. Nicol, D.Sc 691 



8. Persulphates. By Dr. II. Marshall 692 



9. Cobaltic Salts. By Dr. H. Marshall 692 



10. Report of the Committee on the Bibliography of Spectroscopy , 692 



11. Report of the Comniittee on the Action of Light on the Hydracids of the 

 Halogens in presence of Oxygen 692 



