LIST OF PAPERS READ. 141 



Section C. — Botany, Bacteriology, Agriculture and Forestry. 



THURSDAY, JULY 14. 



1. Presidential Address on "Some Aspects of Botany in South Africa- 



and Plant Ecology in Natal," by J. W. Bews, M.A., D.Sc. 



TUESDAY, JULY 12. 



2. Natal species of the genus Cassia : Helena Forbes. 



3. An account of the Flora at Isipingo : Helena Forbes. 



4. The Plant Succession in a type of Midland Tree Veld in Natal : 



R. D. Aitken, M.Sc. 



5. The Aeration Systems of certain Natal plants : a preliminary 



account : G. W. Gale, B.Sc. 



6. Notes on some Fungi in the air of sugar mills and their relation 



to the sugar industry: P. A. van der Bijl. M.A.. D.Sc. ... 



7. An interesting abnormality of Polyporus lucidus: P. A. van der 



Bijl, M.A., D.Sc. 



8. Interspecific hybrid and backcross of Foxglove : E. Warren, D.Sc. 



FRIDAY, JULY 15. 



9. Notes on some interesting or little known South African Fungi : 



P. A. van der Bijl/ M.A., D.Sc, F.L.S. 



10. Protonemal developments of Mosses: H. A. Wager, A.R.C.S. 



11. The genus Passerina and its distribution in South Africa: D. 



Thoday, M.A. 



12. The potency of Pepper-tree pollen as a cause of Hay Fever : G. 



Potts, B.Sc, Ph.D. 

 13 A method of Veld -estimation in relation to Lamziekte : A. O. D. 



Mogg, B.A. 

 14. Agricultural experiment : its design and interpretation : E. 



Parish, B.Sc. 



Section D. — Zoology, Physiology, Hygiene and Sanitary 



Science. 



TUESDAY, JULY 12. 



1. Presidential Address on " Some recent Advances in Zoology and 



their relation to Present-day Problems," by H. B. Fantham, 

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



MONDAY, JULY 11. 



2. The experimental infestation of freshwater snails, with specific 



reference to the Bilharzia parasite: F. G. Cawston, B.A., 

 M.D. 



3. Birds and bilharziasis. F. W. Fitzsimons, F.Z.S. , F.R.M.S. 



4. The life-histories of some Trematodes occurring in South Africa : 

 Annie Porter, D.Sc, F.L.S. 



WEDNESDAY, JULY 13. 



5. The natural history, including the geology, of Durban : E. C. 



Chubb, F.Z.S., F.E.S. 



6. The life-history of species of Heterodera in South Africa: J. 



Sandground, M.Sc. 



7. A note on Ortalia pallens: R. H. T. P. Harris. 



FRIDAY, JULY 15. 



8. Some Protozoa found in certain South African Soils: H. B. 



Fantham, M.A., D.Sc, and Esther Taylor B.Sc 



9. Some parasitic Protozoa found in South Africa, IV: H. B. 



Fantham, M.A., D.Sc 



10. Nature's methods of screening light in the eyes of Mammals, Birds, 



Reptiles and Amphibia : Lindsay Johnson, M.D. 



11. What is the reservoir of South African horse-sickness?: G. VAN 



de Wall de Kock, M.R.C.V.S. 



