iv Contents. 



PAGE 



The Barometer ; its Reduction to Sea-Level. By A. G. 



Howard 259 



The Acacias of Southern Africa. By R. Marloth, Ph.D., 



M.A 267 



On the Subjective Causes of Evolution as Illustrated 

 BY the Geographical Distribution of Plants. By 

 F. Guthrie, LL.B 275 



Note on the Teeth of the Ziphioid Whale [Mesoplodon 



layardi, Gray). By Roland Trimen, F.R.S. . . . 295 



On some Photographs of Lightning Flashes. By C. Ray 



Woods 298 



Photographs of Lightning Flashes taken Sept. 18th, 



1888. By C. Ray Woods 303 



The Star Lore of the South African Natives. By W. 



Hammond Tooke 304 



A Short Account of the Attacks of the Teredo navalis 

 AND Ghelura terebrans upon Greenheart [Nectandra 

 rodicei) and Sneezewood {Pteroxylon utile) Timbers. 

 By R. H. Hammersley-Heenan 313 



Sea-Levels in South Africa from Barometric Observa- 

 tions. By F. Guthrie, LL.B. 318 



The Relation of the Sand Dune Formation on the South- 

 West Coast of Africa to the Local Wind Currents. 

 By H. C WiLMER 326 



