Contents. 
Presidential Address, 1915. The Bushman as a Palaeolithic 
Man. By Dr. L. Peringfey 225 
Some Notes on the South African ErysipTiaceae. By Ethel 
M. Doidge, D.Sc, P.L.S. (Plates XXX— XXXY) . .237 
G-EiTsi GuBiB, AN Old Yolcano. By A. W. EoGERS. (One Text- 
figure) 247 
On Some Dinosaur Eemains from Bushmanland. By S. H. 
Haughton, B.A., F.G-.S. (Six Text-figures) .... 259 
The Occurrence of Dinosaurs in Bushmanland. By A. W. 
EoGERS. (Plate XXXYI and One Text-figure) . . . .265 
A Eecord of Plants Collected in Southern Ehodesia. Com- 
piled by Fred. Eyles, F.L.S., 1915 273 
The Equivalent Mass of a Spring Yibrating Longitudinally. 
By Alexander Brown. (One Chart) ..... 565 
On the " Lines " within Eontgen Interference Photograms. 
By J. Steph. van der Lingen. (Three Text-figures, Plates 
XXXYII, XXXYIII) 571 
Osteology of Palaeornis, with other Notes on the Genus. 
By E. W. Shufeldt. (Communicated by L. Peringuey.) 
(Plates XXXIX— XLI) 575 
Note on Apparent Apogamy in Pterygodium Newdigatae. By 
A. Y. DcJTHiE. (Plates XLII, XLIII) . . . . \ 593 
Simple Apparatus for Use in Applied Mathematics. By J. 
Steph. van der Lingen. (Two Text-figures) .... 599 
A New Aloe from Swaziland. By I. B. Pole Evans. (Plate 
XLIY) 603 
The GrROWTH-FoRMS OF Natal Plants. By J. W. Bews. (Com- 
municated by Prof. H. H. W. Pearson) ..... 605 
The South African Eust Fungi. I. The Species of Puccinia on 
Compositae. By I. B. Pole Evans. (Plates XLY— XLIX) . 637 
