LIST OF PAPERS READ AT THE SECTIONAL 



MEETINGS. 



Section A. — Astronomy, Mathematics, Physics, Meteor- 

 ology, Geodesy, Surveying, Engineering, Architec- 

 ture, AND Irrigation. 



MONDAY, JULY 8. 



1. Address by Prof. J. T. Mokkison, M.A., B.Sc, F.R.S.E., President of 



tlie Section. 



WEDNESDAY, JULY la 



2. Safety in winding operations : J. A. Vaughan, M.I.C.E., M.I.Mech.E. 



3. A new type of accurate sundial or solar clock : J. Moik, M.A., D.Sc, 



F.I.C. 



4. A rapid approximate method of calculating the occultation of stars 



by the moon (for the Central Transvaal) : J. MoiR, M.A., D.Sc, 

 F.I.C. 



THURSDAY. JULY n. 



5. The desiccation of Africa : the cause and the remedy : Prof. E. H. L. 



ScHWARz, A.R.C.S., F.G.S. 



Section B. — Chemistry, Geology, Metallurgy, Mineralogy, 

 AND Geography. 



TUESDAY, JULY 9. 



1. Address by P. A. Wagner, Ing.D., B.Sc, President of the Section. 



2. The medicinal springs of South Africa — Supplement I : Prof. M. M. 



RiNDL, Ing. D. 



3. On the persistence of arsenite of soda in the soil : C. W. Mally, M.Sc, 



F.L.S.. F.E.S. 



WEDNESDAY, JULY 10. 



4. Note on the occurrence of a peculiar phosphate of aluminium in a 



deposit of bat guano : B. de C. Maechand, B.A., D.Sc. 



5. The determination of phosphoric oxide ; particularly in fertilisers, 



soil extracts, and the like : B. ue C. Marchand, B.A., D.Sc. 



6. Wasted South African resources : coal and its by-products : A. Kloot, 



B.Sc. A.I.C. 



THURSDAY, JULY 11. 



7. Some experiments on the fate of arsenic in the animal body: 



H. H. Green, D.Sc, F.C.S., and C. D. Dykman, M.A. 



8. The behaviour of bacteria towards arsenic: H. H. Green, D.Sc, F.C.S., 



and N. H. Kestell, B.A. 



Section C. — Botany, Bacteriology, Agriculture, and Fores- 

 Try 



TUESDAY, JULY 9. 



1. Some experiments in the rudimentary teaching of Botany: Rev. F. C. 



KoLBE, B.A., D,D. 



2. Some notes on a collecting trip to French Hoek: E. P. Phillips, 



M.A., D.Sc. F.L.S. 



