SECTIONAL TRANSACTIONS.- A, B. 353 



be obtained for lowei- electron velocities than the spectrum 

 of the other element, and this was not found to be the case. 

 We therefore conclude that the different critical velocities 

 found for neon correspond to the displacement of differently 

 situated electrons within the atom, or, in other words, that 

 the external electrons in neon are not all symmetrically 

 situated about the nucleus. 



16. Report of Committee on Gravity at Sea. 



Friday, August 27. 



17. Prof. S. Chapman, F.R.S. — Terrestrial Magnetism, 



Aurora, Solar Disturbance, and the Upper Atmosphere. 



18. Di'- A. E. OxLEY. — Magnetism and the Structure of the 



Atom. 



19. Mr. J. H. Shaxby. — Vapour Pressures. 



20. Reports of Committee on Tides. See p. 321. 



(1) Prof. Proudman. — Harmonic Analysis. 



(2) Mr. A. T. DooDSON. — Prediction. 



21. Dr. P. V. Wells.— T/ie Thickness of Stratified Soap 



Films . 



22. Mr. H. P. Waran. — A New Type of Interferometer. 



23. Joint discussion with Section E on Geodesy. See p. 346. 



SECTION B.— CHEMISTRY. 



(For references to the publication elsewhere of communications entered in 

 the following list of transactions, see p. 380.) 



Tuesday, August 24. 



1. Presidential Address by Mr. C. T. Heycock, F.R.S. 



See p. 50. 



2. Capt. A. Desborough. — Industrial Alcohol. 



Wednesday, August 25. 



3. Joint Meeting with Section A for the discussion of papers 



7 and 8 in the programme of that Section (which see). 



4. Discussion o)i Lubrication. — Mr. A. E. Dunstan, Mr. 



H. M. Wells, Mr. J. E. Southcombe, Mr. H. T. 

 TiZARD, Prof. W. C. McC. Lewis. 



Thursday, August 26. 



5. Papers on the Metallurgy of Tungsten. — Mr. J. L. F. 



VoGEL, Prof. C. H. Desch. Electrolytic Zinc. — Mr. S. 

 Field. 



6. Dr. R. V. Stanford. — (a) ISIew Method for the Estima- 



tion of Carbon by Comhustinn in Organic Compounds, 

 using very small quantities of substance, (b) Estima- 

 tion of Amino-acids, using very small quantities of 

 substance. 

 1920. A A 



