TRANSACTIONS OF THE SECTIONS. Xlil 



Section B. — CHEMISTRY. 



THURSDAY, AUGUST 2. 



Page 

 Address by Professor Wyndham Dtjnstan, M.A., LL.D., F.R.S., President 



of the Section 510 



1. The Electrical Discharge in Air and its Commercial Application, By 



Sidney Leetham and William Ceamp 520 



2. -The 1 : .3 : 5-hexatrien. By Professor Van Rombtiegh 521 



3. Report on Dynamic Isomerism (p. 157) 521 



4. Report on the Study of Hydro- Aromatic Substances (p. 257) 521 



5. On the Effects upon the Concentration of a Solution of the Presence of an 



Excess of Undissolved Salt. By A. Veenon Haecouet, F.R.S 521 



6. -The Crystallisation of Gold in the Solid State. By G. T. Beilby, F.R.S. 522 



7. On the Temperature at which AVater Freezes in Sealed Tubes. By Pro- 



fessor H. A. MiEKS, F.R.S., and Miss F. Isaac 522 



FBI DA Y, A UG UST 3. 



1. The Chemical Aspects of Cyanogenesis in Plants. By Professor Wynbham 



Dtjnstan, F.R.S., and Dr. Heney (p. 145) 522 



2. The Distribution of Prussic Acid in the Vegetable Kingdom. By Dr. 



Geeshoff (p. 138) 522 



3. *Chemical Research in the Dutch East Indies. By Dr. Geeshofp 523 



4. -The Utilisation of Nitrogen in Air by Plants. By T. Jamieson, F.I.C. 523 



MONDA Y, A UG UST 6. 



1. The Present Position of the Chemistry of Rubber. By S. S. Pickles, 



M.Sc. (p. 233) 523 



2. On the Constitution of Caoutchouc. By Professor C. D. Haeeies 523 



3. On the Polymerisation of Isoprene. By Professor W. A. Tilden, F.R.S. 525 



4. The Latex of Dyera costulafa. By Professor W. A. Tilden, F.R.S. ... 525 



5. The Present Position of the Chemistry of the Gums. By H. H. Robinson, 



M.A. (p. 227) 526 



6. '''On a Gum (Cochlospenmtm Oossypium) which produces Acetic Acid 



on Exposure to Air. By H. H. Robinson, M.A 526 



7. Note on Ergot Alkaloids. By G. Baegee and F. H. Caee 526 



8. The Hydrolysis of Sugars. By R. J. Calbwell, B.Sc. (p. 267) 527 



TUESDA r, A UG UST 7. 



*Joint Discussion with Section I (Physiology) on the Factors which determine 



Minimal Diet Values 527 



1. The Absorption of Ammonium Salt by Clay and other Soil Constituents. 



By A. D. Hall and C. T. Gimingham 527 



2. Oxidation in Soils and its relation to Productiveness. By Feancis V. 



Daebishiee, B.A., Ph.D., and Edwaed J. Russell, D.Sc 528 



3. A Method of Determining Indigotin. By W. Popplewell Bloxam 528 



4. Report on the Transformation of Aromatic Nitroamines and Allied Sub- 



stances, and its Relation to Substitution in Benzene Derivatives (p. 159) 531 



5. Report on Wave-length Tables of the Spectra of the Elements and Com- 



pounds (p. 161) 531 



