CONTENTS. Xxl 
4 Page 
3. On the Healing of Parenchymatous Tissues in Plants. By Professor 
ER CreM EDO TPE, NAS OE Ss © saath. vom aptge cas secs ssessletsceessccescacsececnce 585 
4, *Joint Discussion with Section L on Educational Methods in the Teach- 
ing of Botany. Opened by HaroLp WAGER, F.LR.S. ........ cece eee eeees 586 
THURSDAY, AUGUST 1. 
1, On the Vegetation and the Floral Elements of Tropical Africa, By 
BMESOE AS LUNG « cease. chnasv in cswabannassenoxseodsenddedensneuseessostneseanee 586 
2. The Phyto-Geographical Subdivisions of South Africa, By R. Marzora, 
Ph.D. 
ARTO Oem eee eee Hee RHETT TEESE HEHE HOE H HEE HOHE HHH ESTEE EEEEESE HEHEHE EH EEE SEES 
FRIDAY, AUGUST 18. 
1. The Systematic Position of Welwitschia. By Professor H. H. W. 
aHCMENON GE MCA cor BEL satis oz cee ect ces oe adeeres as <ddcegseee coe ssarncscsentdeecn nesses 590 
2. Notes on Irrigation pe ba on the Orange River. By F. B, Parkinson, 
A.R.S.M., BUENA Ton Bi) Letealt). ob araisigaa. wabien bin daatereees 590 
J OHANNESBURG. 
TUESDAY, AUGUST 29, 
Address by the PrusipENT (p. 562)..............666+ (eigecks comasooami a eeadestea ewan 591 
1. The Fossil Floras of South Africa. By A. C. Sewarp, M.A., F.R.S. ... 591 
2.*Recent Information concerning South African Ferns and their Dis- 
tribution. By T. R. SIM... essere abe ceiapeaidestsete adie amends os ayy O91 
WEDNESDAY, AUGUST 30. 
1. Botanical Photographs as Aids to Ecological Research. By Professor 
PSE ETS ISGs; LlanSeiecessenterectcastesedadestcrateeesessoeeses Hane Ue Cond 592 
2. Report on the Registration of Botanical Photographs (p. 226) ............4. 693 
3. The Climate and Life-zones of the Transvaal. By JosrrpH Burrr-Davy, 
MPS EEHgP Ee Pet sts y Ee Ene MGESOC, 1. occ snsccnccontaseccsccvbeoss coasesy.siecoatoexyand 593 
4, Hecteria as Agents in the Oxidation of Amorphous Carbon. By Professor 
Mir PopmERs Me Ass SE UISSH 0 sisaiccds ofa «.sicb talobiets ceca soe dog Jeeeble Bosh we beth 594 
5. *Note on the Dissipation of Absorbed Solar Radiation by Xerophilous 
Plants. By Horace T. Brown, UL.D., F.R.S. ......sccecceeenesceneceeenaes 595 
6. Some Problems of Heredity. By R. P. Greaory, M.A. «1.0.0.0... :eeeeeeees 598 
7. Infection Phenomena in Various Uredinee. By I. B. Porte Evans, 
BA SEG ip en ciisn aa nchtis ae ub iintids doves pec Pooe tectae ere. ciseusteasentasecsaness 595 
8. *On our Knowledge of South African Succulents. By Dr, 8. ScHonzanp 596 
9. Finger-and-Toe (Plasmodiophora Brassice). By Grorer Ports, B.Sc., 
ha D. 
Sitiaop Metres nea siag ston ccciet strc ccingeinaces.cacsddananaewanansscdcayrsepiterek sxSsaceas 596 
11. Report on Experimental Studies in the Physiology of Heredity (p. 226)... 596 
