CONTENTS. 



Papers Read : — Pace 



" Rainfall and Barometric Variation in Bulawayo," by 



Father E. Goetz, S.J., M.A., F.R.A.S. ... ... 155 



" Bat Guano Deposits of Rhodesia," by Edmund Victor 



Flack ... ... ... ... ... •■• 15S 



" Magnesia Impregnated Soils," by G. N. BlackshaAv, 



O.B.E., B.Sc, F.I.C. ... ... ... ..- 171 



" Note on Kimberlite from the Belgian Congo," by P. A. 



Wagner, Ing. D., B.Sc. ... ... ... ... 1"9 



" Constituents of the Flora of Southern Rhodesia," by 



F. Eyles ... ... ... .- ... ••■ 181 



" Additional Host-plants of Loranthaceae occurring 

 around Durban," by Paul A. van der Bijl, M.A., D.Sc, 

 F.L.S. ... ... ... ... ... ... 185 



" Note on the Crassulaceac found in Rhodesia," by 



S. Sc.honland, M.A., Ph.D. ... ... ... 186 



" Ripening of Seed in Gnetum gnemon and Gnetum 



africanum," by Mary G. Thoday ... ... ... 189 



" A Not.e on Dasychira exforta and its Lepidopterous 



Parasite," by C. P. van der Merwe ... ... ... 192 



" Birds and Insects in Bushman Folk-lore," by D. F. Bleek 194 



" A Tachinid Parasite of the Honey Bee," by S. H. Skaife, 



M.A., M.Sc. 196 



" Agricultural Economics — Cost of Production of Maize," 



by R. A. Lehfeldt, D.Sc. ... ... ... ... 201 



" Calibration of G«rber Milk Butyrometers," by C. O. 



Williams, B.Sc, A.R.C.S. ... ... ... ... 205 



" Note on Rock-gravings at Metsang, Bechuanaland Pro- 

 tectorate," by A. J. C. Molyneux, F.G.S. ... ... 206 



" Some Features of the Religion of tlie Ba-Venda," by 



Rev. H. A. Junod ... ... ... ... 207 



"The Occurrence of ' Terblanz ' {Fawrea Macnaughtonii, 

 Phill.) in Natal and Pondoland," by E. P. Phillips, 

 M.A., D.Sc, F.L.S., and J. J. Kotze, B.A., D.Sc ... 221 



" A Method of Veld Estimation," by A. 0. D. Mogg, B.A. 222 



" Note on a Diagram showing the amount of Available 

 Sunsliine falling on a Horizontal Surface on any Day 

 of the Year at a Given Place, and showing also the 

 Sun's Elevation and its Times of Rising and Setting," 

 by J. T. Morrison, M.A., B.Sc, F.R.S.E. ... ... 227 



" Note on Older Palaeolithic Implements from the Umguza 

 and Bembesi Valleys," by A. W. Macgregor, B.A., 

 F.G.S 230 



" The Effect of Elevation of Temperature and Altitude of 

 Aerodrome in the Taking-off of Aeroplanes," by P. G. 



Gundry, B.Sc, Ph.D., F.R.Ae.S 235 



" Karroo Rock.s in the Mafungabusi, Southern Rhodesia," 



by A. J. C. Molyneux, F.G.S. ... ... ... 249 



E. H. Adlington, Ltd., Printers, Johannesburg— 7532 



