Minutes of Proceedings. 
Xlll 
and to formulate a few provisional though fairly definite laws of a kind 
which colour-mathematics has to determine. 
"A List of S.A. Fungi." By Miss A. M. Bottomley. 
This paper is a systematic compilation, with indexes of all the South 
African Fungi in the Government Mycological Herbarium. It records some 
276 genera and 800 named species, some of the more important or more 
interesting of which are illustrated by photographs of actual specimens. 
Considerable space is occupied by the Eusts, the Perisporales and the 
Pore Fungi, three groups which are receiving particular attention in the 
Mycological Department. 
Ordinary Meeting. 
An Ordinary Meeting was held on Wednesday, October 17th, 1917, at 
8.15 p.m., in the Board Room of the South African Association, Church 
Square, Capetown. 
Dr. A. Jasper Anderson, Vice-President, was in the Chair. 
The Minutes of the previous Meeting were confirmed. 
Mr. C. D. Leslie and Mr. Bernard Price were elected members of the 
Society. 
Mr. L. P. BosMAN, B.A., and Prof. E. W. Wilcocks were nominated 
for membership. 
The Chairman gave notice of the election of the Council, President and 
Officers, and announced the Council's recommendation to the Society as 
members of Council for 1918 of the following seven members of the existing 
Council : — A. Jasper Anderson, W. A. Caldecott, G-. S. Corstorphine, 
L. Crawford, S. S. Hough, W. A. Jolly, and L. P^ringuey ; and the 
following five Fellows :— J. C. Beattie, J. D. F. Gilchrist, J. Moir, I. B. 
PoLE-EvANS, and Sir A. Theiler. 
The Council further recommend J. D. F. Gilchrist as President, L. 
Crawford as Hon. Treasurer, and W. A. Jolly as Hon. General Secretary. 
Communications : 
" Spectrum phenomena in the Chromium Compounds : being Part TV 
of the spectrum of the Euby and Emerald." By James Moir. 
It has been found that although aqueous solutions of the chromium 
salts do not show any narrow characteristic bands in the spectrum, yet when 
anhydrous (or nearly anhydrous) solutions are used, the spectrum is crossed 
by narrow bands in the red similar to what are seen in the ruby or emerald 
spectrum. 
The solutions of chromium oxide in cone, sulphuric and in fused meta- 
phosphoric acid have been investigated and the bands measured ; they are 
very similar to those seen in the emerald, but not absolutely identical ; 
