■JOy INDEX OF SUBJECTS 



I'AGE 



riL'bidcntial .\(ldiess ; I'obt-Cretaceous Climates of .South Afiica ... 1 



,, jj J Section A ... ... 32 



„ , „ B 42 



„ , „ *^ ■■■ ... ... ... 52 



„ , ,, ^ ■■■ ■ ... ... ... 64 



„ , „ ^ 95 



„ , „ ^' ■•■ . ... ... ... 105 



Presidents and Chief Otticeis of Pa.st Meetings ... ... ... xii 



Pretoria, salt jian ... ... ... ... ... ... \\j 



I'reventable mental disorders ... ... ... ... ... 105 



Proceedings of Twentieth Annual General Meeting ... ... x.xiii 



J*roposals, Australian, for wage variation ... ... ... ... 449 



Protozoa, from certain South African soils ... ... ... 340 



,, , ,, Cape Province soils ... ... ... ... 341 



,, , ,, Orange Free State soils ... ... ... 348 



. ,, , ,, Portuguese, East African soils ... ... ... 352 



„ , ,, South African soils, geographical distribution of 355 



,, , ,, Transvaal soils ... ... ... ... ... 347 



,, , ,, waterlogged soils ... ... ... ... ... 354 



■ ,, , „ ,, " ., , list of ... ... ... ... 358 



,, , parasitic, found in South Africa ... ... ... 332 



,, , soil, distribution in culture fluid ... ... ... 364 



„ , ,, ', effect of light on ... ... ... ... ... 364 



,, , ,, , environmental effects on ... ... ... ... 359 



,, , ,, , ill cultures of South African ... ... ... 340 



,, , ,, , influence of culture area exposed ... ... ... 363 



,, , ,, , influence of depth of soil on ... ... ... 360 



,, • ,, , seasonal variation among ... ... ... ... 368 



,, , ,, , sequence of appearance in cultures from different 



depths ... ... ... ... ... 365 



,, , ,, , sporadic appearance, in cultmes ... ... ... 367 



,, , ,, , succession of dominant types ... ... ... 367 



Protozoology, modern developments in ... ... ... ... 67 



I'roverbs, SiRonga ... ... ... ... ... ... 401 



Psychology, practical applications of ... ... ... ... 439 



,, ,, ,, ,, , in education ... ... 442 



,, ,, ,, ,, , ., industry ... ... 445 



., ,, ,, ,, , ,, medicine ... ... 441 



Psychoses, germ ... ... ... •.- ... . 109 



, intoxication ... ... ... ... ...105,106 



Public lecture, the Early Development of South Africa ... ... 113 



Quartzite, Pomona ... ... •■• ... -.. .•■ 9 



Railway, Antofagasta, waterworks department ... ... ... 120 



Rats, incidence of keratomalacia among ... ... ... ... 241 



Report, of Council, 1922 ... ... ... ... ... .•■ xxvii 



„ , „ Treasurer, 1922 ... ... ... ... ... xxx 



Reptiles, scales, origin of feathers from ... ... ... ... 263 



L'hinosporidiiim. Kincah/i ... ... ... ■•• .-■ •■• 337 



Uib, variation in tenth, of Penguin ... ... ... ... 280 



Rickettsia bodies ... ... ... •■■ ••■ ■•• ^6 



Rivers, and Post-Cretaceous climates ... ... ... ... H 



16 

 337 



Salt pan, Pretoria 



Suicocystis tcnelhi, seasonal periodicity of 



Sarcodina ... ... •■• ••■ ••• ■•• ^3'- 



Sarcosporidia ... ... .• .■■ ••■ ••• ••■ ^^' 



Scales of reptiles, origin of feathers from ... ... ... ... 263 



Scfiiiiiis mofle {Vepper tree), as cause of hay fever ... ... 146 



Schistosomiasis ... .■ ••• • ■■ • •• ••■ ■• '' 



Schistosomes, life-histories of ... .. ■ ••■ ■■• '^ 



Sectional Meetings, papers read at ... ..- •■• •.• ^\i 



,, Officers, former ... ... ••• ••• ■•• ^^^ 



