^5(5 



INDEX OF SUBJECTS. 



PAGE 



Aboriginal tiil)es of Eastern Province ... ... ... ;iil4 



Acdiithojisiichr jiinoiH, natural control of ... ... ... 291 



Aeroplanes, taking-off of ... ... ... ... ... 235 



Annual general nieetinf>;, Bnlawayo, proceediiigs ... ... xx 



Annual meetings, past, presidents, etc. ... ... ... ix 



,. . ., , sectional jii'esidents and secretaries ... xi 



evening discourses ... ... ... xiv 



Association, cojistitution ... ... ... ... ... i 



. library of ... ... ... ... ... xxxiii 



Astronomy, recent progress in ... ... ... ... .% 



Bagwoi'm, wattle, control of ... ... ... ... 291 



Balance sheets ... ... ... ... ... ... xxvii- 



Bantus, magic confcplion of Nature among ... ... ... 76 



Barometric variation. Bulawayo ... ... ... ... loo 



Bat guano deposits, Rhodesia ... ... ... ... lo8 



Ba-Venda, religion of ... ... .. ... ... 207 



Belgian Congo, kimheidite from ... ... ... ... 179 



Bemljesi valley, implements f r* m ... ... ... ... 230 



Birds ill Bushman folk-lore ... ... ... ... 194 



Bono throwing ... ... ... ... ... ... 81 



Bulawayo and A'ictoria Falls, geological section hetween ... 113 



Bulawayo, award of South Africa Medal at ... ... xxx 



. committees at ... ... ... ... ... xvii 



. list of papers read at ... ... ... ... 110 



. meetings at ... ... ... ... ... xvi 



, officers and Council at, 1920-21 ... ... ... xxxviii 



, proceedings of 18th anr.ual general meeting at ... xx 



. rainfall and barometric variation in ... ... loo 



, report of Council at ... ... ... ... xxiii 



, Treasurer's report at ... ... ... ... xxvi 



Bushman folk-lore, l)irds and insects in ... ... ... 194 



Bushmen of Eastern Province ... ... ... ... 31o 



Butyrometers, Gerl)er, calihrition of ... ... ... 20o 



C'alibration of Gerber l)utyrometers .. ... ... ... 20o 



('(irrcJui cvoJiiiis ... ... ... ... ... ... 29o 



Committees at Bulr.v\ayo meeting ... ... ... ... xvii 



Constitution of the Association ... ... ... ... i 



Council, repoi't of, at Bulawayo ... ... ... ... xxiii 



Crassulaceae of Rhodesia ... ... ..." ... ... 186 



Crime and feeble-mindedness .. ... ... ... 116 



Ddsiichiin c.rfititd ... ... ... ... ... ... 192 



, lepidopterous parasite of ... ... 192 



Discouises, evening, ... ... ... ... ... xiv 



Eastern I'rovince, alioriginal tribes of ... ... ... 304 



Economics, agricultural (maize) .. ... ... ... 201 



Einstein's plaiittary equation ... ... ... ... 151 



Entomological research and human welfare ... ... ... 69 



Equisetaceae of Southern Rhodesia ... ... ... ... 284 



Ericoid leaves ... ... ... ... ... ... 120 



Evolution of flora of South Africa ... ... ... ... 51 



Fosciohi (j\{iant\(a, life history of ... ... ... ... 126 



Fnuica tiuiriKntolifonii, occurrence of ... ... ... 221 



Feeble-mindedness and crime ... ... ... ... 116 



Ferns found in Southern Rhodesia ... ... ... ... 277 



Ferns, South African, notes on ... ... ... ... 275 



Fertilisers, mixed, solubility of phosphoric oxide in ... ... 268 



Filices of Southern Rhodesia ... . ••• ••• ■■• ^79 



Flora of South Africa, progressive evolution of ... ... 51 



,, , South African, influence of climatic changes on ... 58 



, ,, .. , .. .. .. cycles ,, ... ."53 



Flora, Southern Rhodesia ... ... ... ... ... 181 



Fluke, African cattle and sheep ... ... ... ... ' 126 



Food factors, accessorv, distribution of ... ... ... 121 



