LIST OF PAPERS READ AT THE SECTIOXAE 

 MEETINGS. 



Sfxtion a. — AsTRoxoMv, Mathematics, Physics, 3*Ieteoro- 

 lOGv. Geodesv, Sur\'kvixg, Encineering, Architec- 

 Ti:'RE AND Irrigation. 



WEDNESDAY. JULY 5. 



I. Address by Rev. E. Goetz, S-J.. M-A- F.R.A.S-. President of :he 

 Section. 



2- Some Observations on .\tmosphcric Electricity taken in Soutli Africa- 



Bv Prof. W. A. D. Rudce, ALA. 



3- Electric Clocks. By Prof. H. Bohlf., M.T.E-E., M.V-D.E. 



4. South African Climatic Conditions in Relation to Aviation- Bv 

 R- T- A- iNNEs, F-R-A-S-, F-R-S-E. 



Section B. — Chi":mistrv, Geology, Mineralogy, and G^^x)- 



GRAl'IIY. 



WEDNESDAY, JULY 5. 



1- Selective Absorption of Substances by the Earth's Cursv Bv Prof- 



E- H- L- ScHWARz, A-R-C-S-, F-G-S- 



2- Notes on Investigations made on some South African Tobaccos, By 



M- LUNOIK- 



3- Chemistrv and Crystallography : A New Suggestion- Bv J- Mom, 



AI-A-,^ D-Sc-, F-C-S- 



4- Twenty-live Years of Chemical Investigation in the Cape Colony- 



By C- F- JuRiTz, M.A-, D-Sc-, F-l-C- 



5- A Mineral Survey of the Zinc and Lead Deposits of Broken Hill, 



Xorth-Western Rhodesia- Bv A- E- V- Zealley, A-R-C-S-, 

 F-G-S- 



6- The Occurrence of Scorodite in Rhodesia- Bv A- E- V- Zealley, 



A-R-C-S- F-G-S- 



7- The Sugar Content of Maize Stalks- By G- N- Blackshaw, B-Sc-, 



F-C-S- 



8- The Sedimentary Rocks of the Rhodesian Plateau- Bv F- P- ^^Ifnnell, 



F-G-S- 

 •9- A Relation between the Geologv and Metallurgy of Gold- By F- T- 



MuMFORi), A-I-M-M- 

 10- The Origin of the Rand Bankets- Bv Prof- E- H- L. Schwarz, 



A-R-C-S-. F-G-S- 

 Ti. The Purification of Water- By Prof. H- Bohle- M-T-E-E-, M-V-D-E. 

 T2. Theories of Atmospheric Variation- Bv D- Traill, M-A-, M-B-. 



Ch-M- B-Sc- 



THURSDAY, JULY 6- 



33. Address l)y A- J- C- Molyneux, F-G-S-, F-R-G-S-, President of 

 the Section- 



