Xtt INDEX. 



PAGE 



Mulberry, blight due to Bactcrhtm mori 84 



Mutations and Evolution 300 _ 



• „ , individual 302 



„ , racial 303 



„ , specific ... . . > 303 



„ , strain 302 



,, , successional 307 



Myriapoda 108 



Myrmedonia 102, 108 



Myrsinaceae 365 



Myrsiiie africana 366, 368 



„ melanophlccos 365, 368, 369 



„ , location in Transvaal 368 



Myxidium incun'atnm ... i8g 



Myxidium licberkuhni i8q 



,, , parasitic in Cantharus blochii 189 



„ , „ „ Cliniis cottoides 189 



„ , „ „ „ faurus 189 



„ , „ „ Denfex argyrozona ... 189 



Myxosporidia, South African 189 



Nahoon Bridge 239 



Natives, Christian government, restrictions on 126 



„ , communal tenure, passing of 142 



,, , comparative study of xxx 



„ , economic factor 150 



,, , evolution of irS 



„ , „ „, factors in 113 



„ , ,, „ , processes of 122 



„ , field of enquiry 117 



„ , missions, influence on 123 



„ , peoples concerned 119 



„ , place of witchcraft among 129 



Native territories, improved communications 147 



Nemocera 108 



Nolinae 427 



Notoscolex fcrmiticola _. lOS 



Novitis cardinalis 249 



Nyctotherus cordiformis, parasitic in Xenopus Icevis 190 



Objects of Association ii 



Ocinaropsis obscura 344 



Officers and Council, 1918-1919 i 



, I9I9-I92O XXV 



Oldenlandia (Hedyotis) amatymbica 287, 290 



Organisms, pathogenic to plants 69 



Orthogonius 100 



Ostrich, African -. . . 302 



„ , laald patch of 304 



„ , inheritance of callosities in 3i.=5 



„ , mutations in 302 



„ J plumage variation 308 



„ , variations of 303 



Oxalis sp 289 



Pagellus mormyrus, Spirochaete parasitic in 191 



Pagrus laniarius, hsemogregarine parasitic in 188 



Panicum natalensis 289, 290 



serratuni 290 



Paracorotoca 99, loi, 102, 103, 108 



„ akermani 107 



Paramoecium 300 



Paspalum, Claviceps-infected, poisoning of cattle by 391 



„ , infected with Chimceps paspali 391 



poisoning, animals infected 394 



