n 



") o 



CONTENTS. 



Constitution of the Association ... 

 Tables: Past Annual Meetings: — 



Places and Dates, Presidents, Vice-Presidents and Local 

 Secretaries 



Sectional Presidents and Secretaries 



Evening Discourses 

 BULAWAYO MEETING, 1920: — 



Meetings 



Officers of Local and Sectional Committees 



Proceedings of Eighteenth Annual General Meeting 



Report of Council. 1919-20 



Hon. Treasurer's Report and Accounts ... 



Thirteenth Award of the South Africa Medal and Grant ... 



Association Library 



Officers and Council. 1920-21 



Pkesident's Address : '' The Veld, its Resources and Dangers." 

 by I. B. Pole Evans, M.A., D.Sc, F.L.S. 



Addresses by Presidents of Sections : 



Section A: "Recent Progress in Astronomv." bv H. E. 



Wood, M.Sc, F.R.A.S., F.R.Met.S. ... " ...' 

 Section B: " Geologv in Relation to Mining," by E. P. 



Mennell, F.G.S*., M.I.M.M. ... 

 Section C : " Causes leading toward Progressive Evolution of 



the Flora of South Africa," by T. R. Sim, D.Sc, F.L.S. 

 Section D: "Some Zoological Factors in the Economic 



Development of South Africa," by C. W. Mallv, M.Sc, 



F.E.S. 

 Section E: "The Magic Conception of Nature amongst 



Bantus," by Rev. Henri A. Junod 

 Section F : " Labour Conditions in 



R. A. Lehfeldt, B.A., D.Sc 



Public Lecture : " The Nitrogen Problem," 

 M.A. 



List of Papers Rkad at the Sectional Meetings 



]*AP£RS Read : — 



"The Geological Section between Bulawavo and the 

 Victoria Falls," by H. B. Maufe, B.A. " ... 

 ."Crime and Feeble-mindedness," bv G. T. Morice, K.C.. 

 B.A. ... ... ... ' ... 



" Ericoid Leaves," by D. Thoday, M.A (Cantab.) 

 " The Distribution of Accessorv Food Factors (Vitamines) 

 in Plants," by E. Marion Delf, D.Sc, F.L.S. ... 



■ The Life-history of the African Sheep and Cattle Fluke, 

 Fasciola r/ifjaiitica,'' by Annie Porter, D.Sc, F.L.S.. 



F.R.s. (s.A.) ... ... ... ... ..: 



" Some Parasitic Protozoa found in South Africa. — III.," 



by H. B. Fantham, M.A. (Cantab.), D.Sc. (Lond.). ... 

 " The Future of the Native Races of Southern Rhodesia," 



by N. H. Wilson ... 

 " A Short Note on Einstein's Planetary Equation," by 



AV. N. Roseveare, M.A. 

 " Rainfall and Barom.etric Variation m Bulawayo," by 



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

 " Bat Guano Deposits of Rhodesia." bv Edmund Victor 



Flack 



South Africa," by 

 bv J. A. Wilkinson. 



XV J 



xvii 



XX 



xxiii 

 XX vi 



XXX 



xxxiii 

 xxxviii 



1 



3.5 

 43 

 51 



64 



76 



95 

 110 



113 



116 



120 



121 



126 

 131 

 136 

 151 



155 

 158 



