Some Observations on the Effects of a Bush Fire on the V 
of Signal Hill. By Margaret R. Michell. (With Plates 
XII and one Text-figure) 
Colour and Chemical Constitution. Part XVI.— Further Mis- 
cellaneous Observations. By James Mom ..... 
On Hyalite. By J. S. v. d. Lingen and A. R. E. Walker . . 239 
Circumcision Regiments as a Native Chronology. Bv the Rev. 
Professor W. A. Norton, M.A., B.Litt. (With Folding 
Table) . . . . . . , . 245 
Sesuto and Sechwana Praises. By the Rev . Professor W. A . Norton. 
M.A., B.Litt, ......... 253 
Note on a Determinant with Factors like those of the Difference- 
Product. By Sir Thomas Mum, F.R.S. . . . . 267 
Colour and Chemical Constitution. Part XVII.— The Azo Dyes and 
other Monocyclic Colours. By James Moir ...... 273 
Fungi of the Stellenbosch District and Immediate Vicinity. By 
Dr. P. A. van der Bijl . . . . . 281 
Observations on the Protective Action of Normal Serum in Experi- 
mental Infection with Bacillus Diphtheriae. By T. J. Mackie, 
M.D., Ch.B., D.P.H. . . . . . . || ; 289 
On some Upper Beaufort Therapsida. By S. H. Haughton, B.A., 
D.Sc. (With Plate XIII and two Text-figures) . , , 299 
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