CONTENTS. 
he Granite Area of the Schapenberg, Somerset West. (Prom the 
Geological Department, South African College.) By A. E. E. 
Walker. (With Map ; text-fig. 1) . . . . . .193 
Eadial Lines in Eontgen Interference Patterns. By J. Steph. van 
DER LiNGEN 203 
Note on Protective Eesemblance, etc., in Post- Larval Stages of 
Some Cape Fishes. By J. D. F. Gilchrist, M.A., D.Sc, Ph.D. 205 
Note on Polysaccum crassipes, D.C. : A Common Fungus im 
Eucalyptus Plantations round Pretoria. By Paul A. van der 
BijL, M.A., F.L.S., Mycologist, Union Department of Agricul- 
ture. (With Plates XXXIII-XXX VIII) . . . . .209 
Heart Eot of Ptceroxylon utile (Sneezewood) caused by Foims 
rimosus (Berk). By Paul A. van der Bijl, D.Sc, F.L.S., 
Mycologist, Department of Agriculture, Union of South Africa. 
(With Plates XXXIX-XLIV) 215 
The Electro-motive Changes accompanying Activity in the Mam- 
malian Ureter. By W. A. Jolly. (From the Physiology 
Laboratory, South African College) ...... 227 
