CONTENTS. Xlll 



Page 



3. The Theory of Solution. By T. Steeet Hunt, LL.D., F.R.S 636 



4. The Composition of Copper-Tin Alloys. By A. P. Lattrie 637 



5. The Composition of the ancient Roman Mortar from the London "Wall. 



By JoHK Spujjer, F.C.S 637 



6. On the Rate of Solution of Copper in Acids. By V. H. Velet, M.A. ... 638 



7. Recoverv of the Ammonia and Chlorine in the Ammonia-soda Process. 



By F. Bale 638 



TUESDAY, SEPTEMBER 11. 



1. Third Report of the Committee for investigating Isomeric Naphthalene 

 Derivatives , 640 



■2. Note on the Molecular Weight of Caoutchouc and other Colloids. By Dr. 

 J. H. Gladstone, F.R.S., and W. Hibbert, F.I.C 640 



3. On some new Silicon Compounds. By Professor J. Emekson Reynolds, 



M.D., F.R.S 640 



4. On some new Thiocarhamide Compounds. By Professor J. Emerson 

 Reynolds, M.D., F.R.S 640 



5. Proposed International Standards to control the Analysis of Iron and 

 Steel. By Professor J. W. Langley 640 



6. On the Action of Light on Water Colours. By Arthur Richard- 



son, Ph.D T 641 



7. Further Researches on the Pyrocresols. By Dr. William Bott, F.C.S., 



and J. Bruce Miller, F.I.C 642 



Section C— GEOLOGY. 



THURSDAY, SEPTEMBER 6. 



Address by Professor W. Boyd Dawkins, M.A., F.R.S., F.G.S., F.S.A., 



President of the Section , 644 



L Further Note on the Midford Sands. By Horace B. AVoodward, F.G.S. 650 



2. The Relations of the Great Oolite to the Forest Marble and Fuller's-earth 



in the South-west of England. By Horace B. Woodward, F.G.S 651 



3. Note on the Portland Sands of Swindon and elsewhere. By Horace B. 

 Woodward, F.G.S 652 



4. On Local Geological Photography. By Osmund W. Jeffs 653 



5. Further Notes on the Origin of the Crystalline Schists of Malvern and 

 Anglesey. By Charles Callaway, D.Sc, M.A., F.G.S 653 



6. Sketch of the Geology of the Crystalline Axis of the Malvern Hills. By 

 Charles Cauaway, D.Sc, M.A., F.G.S 654 



7. Archean Characters of the Rocks of the Nucleal Ranges of the Antilles. 



By Dr. Persifor Frazer 654 



8. On a Specimen of Quartz from Australia and Three Specimens of Oligo- 

 clase Irom North Carolina exhibiting curious Optical Properties. By 



Dr. P EEsiFOR Frazer ". 655 



FRIDA Y, SEPTEMBER 7. 



1. Sixteenth Report on the Erratic Blocks of England, Wales, and Ii-eland... 656 



2. On a Hiffh Level Boulder-clay in the Midlands. By Dr. H. W. Cross- 

 key, F.G.S : 656 



