50 
CONTENTS. 
PAGH 
Additions to the Library during 1914 i 
Minutes of Proceedings, December, 1914 — October, 1915 . . xvii 
Extracts from Reports of Eecipients of G-rants in Aid of 
Eesearch xxxiii 
The Gtreat Dyke of ^^orite of Southern Rhodesia : Petrology 
OF THE Selukwe PORTION. By A. E. y. Zealley, A.R.C.S., 
F.a.S. (With Plates I— lY and Two Text-figures) . . .1 
Descriptions of Some New Aloes from the Transvaal. By 
1. B. Pole Evans, M.A., B.Sc, F.L.S. (With Plates V— XV) 25 
Note on Hesse's G-eneralization of Pascal's Theorem. By 
Thomas Muir, LL.D 39 
On the Space-Lattice of Liquid Crystals. By J. Steph. van 
DER LiNGEN. (With Two Text-figures) ..... 45 
Note on the Molecules of Liquid Crystals. By J. Steph. 
VAN DER LiNGEN. (With Three Text-figures) . . . .52 
A Mesostoma from Bloemfontein (M. Jcarrooense, n. sp.). By 
T. F. Dreyer, B.A., Ph.D. (With Tliree Text-figures) . . 55 
Herpetomonidae found in Scatophaga hottentota and Chamaeleon 
pumilus. By H. Bayon 61 
The Coccidae of South Africa. — I. By Chas. K. Brain, M.Sc. 
(Birm.), M.A. (Plates XVI— XXVIII and Thirty-Eight Text- 
figures) 65 
Sir David Gill, K.C.B., LL.D., D.Sc, F.R.S., F.R.A.S. By Alex. 
W. Roberts, D.Sc, F.R.A.S. (Portrait, Plate XXIX) . . 195 
