CONTENTS. 



Tapers 11 cad — continued : — 



Page 

 "Asphalt in relation to Road Construction," by D. Basil 



W. Alexander '. 201 



"Purification of Sewage by the Activated Sludge Process," 



by R. J. Morris ... ...' 215- 



"On the Mechanical Analysis of Soil containing Heavv 



Minerals," hy B. de V. Marchand, B.A., D.Sc. ... _,.*. 223 



"Condensed Milk in -South Africa from the Chemist's point 



of view," hy A. AC Kloot, B.Sc, and I;. Hymau ... 227 



"The genus Passerina and its Distribution in South 



Africa," by D. Thoday, M.A 230 



"On some Fungi from the Air of Sugar Mills and their 

 Economic Importance to the Sugar Industry," by 

 P. A. van der Bid, M.A., D.Sc 232 



"The Plant Succession in a Tvpe of Midland Tree Veld in 



Natal," by R. D. Aitken, M.Sc 233- 



"Protonemal Developments of Mosses," by H. Wager, 



A.R.C.S ; ' 214 



"A Contribution to o:i-c Knowledge of tlie Polvporeae of 



South Africa," by P. A. van der Bijl, M.A?, D.Sc. ... 246 



"Bryophvta of Souther:; Rhodesia," bv T. R. Sim, D.Sc, 



and H. N. Dixon, M.A '.. '.:.] 294 



"The Potency of Pepper Tree Pollen as a Cause of Hav 



Fever," by Geo. Putts. B.Sc. Ph.D ... ..*. 336- 



"Natal Species of the genus Cassia," hy Helena Forbes... 342" 



"Notes on some inter estrbg or little-known South African 



Fungi," by P. A. van der Bijl, M.A., D.Sc 345- 



"The Flora of Mpfago," by Helena Forbes 349 



"A preliminary a: an Interspecific Hybrid and 



Backcrosses of Digitalis.," by E. Warren, D.Sc 359 



"Some Protozoa found h> certain South African Soils: I," 

 by H. B. Fantham, M.A., D.Sc.; and Esther Tavlor, 

 M.Sc ;. ... 373 



"Wdd Birds and Biliiafzias.b/' by F. W. FitzSimons 393: 



"The Experimental Indentation of Fresh-water Snails, with 

 special reference to the Bilbarzia Parasite," by 

 F. G. Cawston, %l.l) ; .'. 396 



"A Study of the Life History and Methods of Control of 

 the Root Gall Nematode Heterodera rodicicola (Greef 

 Muller), in South Africa," by J. Sandground, M.Sc ... 399 



"The Natives and Agriculture." by W. Hammond Tooke... 419 



"The Heavenly Bodies in South African Mvthology," by 



Rev. S. S. Doriian, M.A J ..' 430 



"The Bantu Tdior afcisc in the field of Comparative 



Philology," by Per. W. A. Norton, B.Litt 438 



"Sesuto Praises of the Chiefs," by Rev. W. A. Norton, 



B.Litt *. ... 441 



"On several Implements and Ornaments from Strandlooper 



Sites in the Eastern Province," by J. Hewitt, B.A. ... v 454 



"The Function of a School of Art in the Life of the Com- 

 munity," by 0. J. P. Oxley, A.R.C.A. ... ., 468 



"A Curiosity of Mediaeval French Literature," by R. D. 



Nanta * 474 



"Archival Problems in South Africa," by C. Graham Botha 483. 



Index ; 487 



List of Members i 



NATAL WITSES3, LTD., MABITZBUUd. 



