Stiv CONTENTS. 



Page 



4. On Barium Sulphate in Water-box Deposits from the Durham Coal-mine 



Waters and in Nottingham Sandstone. By Professor Frank Clowes, 

 D.Sc S38 



5. The Manufacture of the Alloys of Aluminium in the Electric JFui-nace. 



By J. H. J. Dagger 538 



MONDAY, SEPTEMBER 16. 



1. Third Report of the Committee on the Bihliography of Solution 640 



2. Third Report of the Committee for investigating the Properties of Solu- 



tions • 540 



3. Report of the Committee on the Absorption Spectra of Pure Compounds 540 



4. Second Report of the Committee for the investigation of the action of 

 Light on the Hydracids of the Halogens in presence of Oxygen 540 



5. Report (Provisional) of the Committee for investigating the Influence of 

 the Silent Discharge of Electricity on Oxygen and other Gases 540 



6 . Report of the Committee on the Bibliography of Spectroscopy 540 



7. A new form of Self-registering Actinometer. By Arthur Richardson, 

 Ph.D " 640 



8. Explosion of a Mixture of Hydrogen, Chlorine, and Oxygen. By Professor 



H. B. Dixon, F.R.S 54] 



9. On the Action of Light on Dry Hydrogen and Chlorine. By Professor 



H. B. Dixon, F.R.S., and J. A. Harker 541 



10. On Artists' Colours. By A. P. Laurie, M.A., B.Sc 541 



11. Specific and Latent Heat in relation to the combining Heats of the 



Chemical Elements. By Dr. W. Newton 541 



12. The Composition of Water by Volume. By Dr. A. Scott 544 



13. A Spectroscope without a Lens. By Philip Bp.ahaji, F.C.S 544 



TUESDAY, SEPTEMBER 17. 



1. Fourth Report of the Committee for investigating Isomeric Naphthalene 

 Derivatives 644 



2. Report of the Committee for conferring with the Committee of the 



American Association with a view of forming a uniform system of re- 

 cording the results of Water Analysis 644 



3. Contributions to the Study of Pure Fermentations. By Professor Percy 



F. Frankland, Ph.D., B.Sc, Grace C. Frankland, and J. J. Foi 544 



4. The Constitution of the Aromatic Nucleus. By S. A, Sworn, B.A., 



Assoc R.C.Sc.1 545 



5. Oh the Reaction of Benzoquinone with Potassium Cyanide. By S. A. 



Sworn, B.A., Assoc.R.C.Sc.1 546 



6. A new White Lead. By J. B. Hannat, F.R.S.E 546 



7. The half of the Hydrogen Atom regarded as a primordial or formative 

 element ; and the representation of the Chemical Elements by Physical 

 forms on that basis ; with models of the 25 elements from hydrogen to 

 nickel constructed in accordance therewith. Bv Isaac Ashe, M.D., 

 T.C.D ', ; ; 546 



8. Researches on Sulphites. By P. J. Hartog, B.Sc 549 



■9. Metallic Aluminium as a Chemical Reagent. By J. B. Cohen, Ph.D., 

 and R. Ormandt 550 



