366 SECTIONAL TRANSACTIONS.—B. 
the molecules by substitution of different atoms ; C,H,Cl, to determine experimentally 
how much of the so-called ‘free rotation’ around a single C—C bond exists, &c., will 
be considered with the help of diagrams for the experimental scattering curves. 
Prof. J. E. Lennarp-Jones.—Lvidence from Molecular Spectra, 
Mr. R. H. Fowtsr, F.R.S.—Quantum Mechanical Theory of Valency. 
Prof. V. Henri.—Predissociation Structure of some Special Molecules. 
Prof. W. Hrtsenpere, Prof. Max Born, Prof. C. G. Darwin, F.R.8., 
Prof. GoupE Situ, Dr. N. V. Sipewicr, F.R.S., Prof. W. L. Braae, 
F.R.8., Prof. T. M. Lowry, F.R.S. 
Mr. C. N. HinsHetwoop, F.R.S. 
Exhibits during the Meeting :— 
(a) The Chemistry of Thallium. (Dr. R. C. Menzies.) 
(b) Some Recent Investigations of the Chemistry of Gold. (Prof. C. 8. 
Greson, O.B.H., F.RB.S.) 
(c) The Chemistry of Rhenium. (Prof. H. V. A. Briscon.) 
(d) Some Recent Investigations in (i) The Menthone Series, (u) The 
Hydrobenzoin Series. (Prof. Jonn Reap, Mr. R. A. Storey, 
Mr._W. J. Gruss, and Dr. IsHpet G. M. CAMPBELL.) 
(e) Optical behaviour of ethyl cinnamate and formation of sodium 
o-nitrophenoxide from o-nitrophenol and glass (Prof. KE. J. 
HARTUNG). 
(f) Automatic continuous extraction of hard and soft water by 
means of standard soap solution (Dr. H. 8. Hatrrexp). 
(g) At the Department of Chemical Technology, Imperial College. 
Special exhibits and experimental work in connection with the 
following researches. (Prof. W. A. Bonz, D.Sc., F.R.8.) 
(i) Gaseous Combustion at High Pressures, including superpressure 
bomb in which H,-air and CO-air mixtures will be exploded 
at initial pressures of 1,000 atmospheres. 
(ii) Catalytic Reactions at High Pressures, including the production 
of CH,OH from CO+2H, mixtures and by the direct oxida- 
tion of methane. 
(ii) The Photographic Analysis of Explosion Flames. 
) The Chemical Constitution of Coal. 
(v) Blast Furnace Reactions. 
) 
Combustion in Electrical Discharges: the Electrical Condition 
of Surfaces during Catalytic Combustion. 
(vii) Problems in Chemical Engineering. 
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