Y.3 
CONTENTS. 
PAGE 
President's Address. The Antiquity of Man. By 
L. Pbringuey i 
Minutes of Proceedings xv 
List of Officers, Fellows, and Members .... xxxvi 
Additions to the Library during 1912 . . . . xli 
A Eevision of the Genus Alejndea, Delaroche. By E. 
DuMMER. (Plate i.) 1 
Positive Electrical Variation in Isolated Nerve. By 
W. A. Jolly. (With five text-figures) . ... 23 
Description of a New Species of Sting-Eay {Trijgon) 
FROM South Africa. By J. D. F. Gilchrist. (Text- 
figure) ......... 
A Short Note on the Occurrence of a Leucocytozoon 
Infection. Host : The Ostrich. By . J. Walker, 
(Plate ii.) 
Valency and Chemical Affinity. By James Moir 
The Eainfall on Table Mountain. By Thomas Stewart 
Addendum to Eevised List of the Flora of Natal. By 
J. Medley Wood 
Tidal Phenomena at Inland Boreholes near Cradock. By 
Andrew Young. (Plates iii.-vii., and five text-figures) 
Notes on Namaqualand Bushmen. By Miss L. Currle 
(With Additional Notes by L. Peringuey) 
33 
35 
39 
41 
47 
61 
113 
