xir REPORT — 1901. 



FRIDAY, SEPTEMBEB. 13. 



Page 



1. Enzyme Action. By Adeian J. Brown 600 



2. ^Radium. By Professor W. Ma eckwald 601 



Department I. 



1. Report on the Relation between the Absorption Spectra and Chemical 

 Constitution of Organic Substances (p. 208) 601 



2. On the Chemical and Biological Changes occurring during the Treatment 



of Sewage by the so-called Bacteria Beds. By Professor E. A. Lexis, 

 D.Sc, Ph.D., and R. F. Blake, F.C.S., F.I.C. .' 601 



3. '^Humus and the Irreducible Residue in the Bacterial Treatment of 



Sewage. By Dr. S. Rideal 003 



4. *Sulphuric Acid as a Typhoid Disinfectant. By Dr. S. Rideal 603 



6. On the Inverse Relation of Chlorine to Rainfall. By William Ackbotd, 

 F.I.C 603 



6. On the Distribution of Chlorine in Yorkshire. Part II. By William 

 ACKROTD, F.I.C 603 



Department II. 



1. Hydration of Tin, including the Action of Light. By Dr. J. H. Gl4D- 

 STONE, F.R.S., and Geoegb Gladstone 603 



2. Transitional Forms between Colloids and Crystalloids. By Dr. J. H. 



Gladstone, F.R.S., and Walter Hibbeet, F.I.C 604 



3. Report on the Nature of Alloys (p. 75) 604 



4. The Minute Structure of Metals. By G. T. Beilbx 604 



5. On the Action of Ammonia on Metals at High Temperatures. By G. G. 



Henderson, D.Sc, and G. T. Beilbt 605 



6. Aluminium-Tin Alloys. By W. Careick Anderson, M.A., D.Sc., and 

 Geoegk Lean, B.Sc 606 



7. *Aluminium-Antimony Alloys. By W. Campbell 606 



8. *Aluminium-Copper Alloys. By W. Campbell 606 



MONDAY, SEPTEMBER 16. 



1. *0n the Three Stereomeric Cinnamic Acids. By Professor A. Michael 607 



2. *0n the Genesis of Matter. By Professor A. Michael 607 



3. *0n the Process of Substitution. By Professor A . Michael 607 



4. *0n the Synthetical Formation of Bridged-rings. By Professor W. H. 

 Perkin, F.R.S 607 



5. The Condensation of Benzil with Dibenzyl Ketone. By G. G. Hendee- 



SON, D.Sc, and R. H. Coestorphine, B.Sc 607 



6. Some Relations between Physical Constants and Constitution in Ben- 

 zenoid Amines. Part IH. By W. R. Hodgkinson and L. Limpach ... 



7. The Existence of Certain Semicarbazides in more than one Modification. 



By George Young, Ph.D 609 



8. Report on Isomeric Naphthalene Derivatives (p. 152) 611 



9. Report on Isomorphous Derivatives of Benzene (p. 78) 611 



