TRANSACTIONS OK THE SECTIONS. XV 



... . Pa S e 



4. Molecular Association in Water, illustrated by Substances contain- 



ing the Hydroxyl Group. By W. E. S. Turner and C. J. Peddle 569 



5. The Problem of Molecular Association : I. The Affinities of 'the 



Halogen Elements. By W. E. S. Turner 570 



6. *Formation of Tolane Derivatives from Benzotrichloridos. By Dr. 



J. Kenner and E. Witham 570 



7. *The Nitro Chloro and the Dichlorololuene Sulphonic Acids. By 



Dr. J. Kenner and Professor W. P. Wynne, F.R.S .'. 570 



8. *The Action of Metals upon Alcohols. By Dr. F. M. Perkin 570 



9. Report on Dynamic Isomerism (p. 80) 570 



10. Report on Aromatic Nitroamines (p. 82) 570 



11. Report on the Study of Isomorphous Sulphonic Derivatives of 



Benzene (p. 100) 570 



12. Report on the Study of Hydro-aromatic Substances (p. 82) 570 



SUB-SECTION OF AGRICULTURE. 



THURSDAY, SEPTEMBER 1. 

 Address by A. D. Hall, M.A., F.R.S., Chairman 571 



1. Impurities in the Atmosphere of Towns and their Effects upon 



Vegetation. By Arthur G. Ruston, B.A., B.Sc, and Charles 

 Crowther, M.A., Ph.D 577 



2. Some Troublesome Diseases of the Potato Tuber. Bv A. S. Horne, 



B.Sc, F.G.S " 578 



3. A Preliminary Note on the Fatty Substances in Oat Kernel. By 



Professor R. A. Berry, Ph.D." '. 579 



FRIDAY, SEPTEMBER 2. 



1. Sugar-beet Growing and Beet-sugar Manufacture in England. By 



Sigmund Stein ,. 579 



2. The Financial Aspect of the proposed Sugar-beet Industry. By 



G. L. Courthope, M.P 580 



3. The Fixation of Nitrogen by Free Living Soil Bacteria. By Pro- 



fessor W. B. Bottomley, M.A 581 



4. Notes on the Nature of Nitrogen Fixation in the Root Nodules of 



Leguminous Plants. By John Golding, F.I.C 582 



MONDAY, SEPTEMBER 5. 



Joint Meeting with Section D : — 



The Part played by Micro-organisms other than Bacteria in 

 determining Soil Fertility. By E. J. Russell, D.Sc, and 

 H. B. Hutchinson, Ph.D 583 



