PROCEEDINGS 
OF THE 
ROYAL SOCIETY OF EDINBURGH. 
SESSION 1918-19 
Part I] VOL. XXXIX. [pp: 
■■ ■■■■ ■ — > -»- 
f JUL2I 
'CONTENTS. % 
no. < . * Slai ' 
I. The Endowment of Scientific and Industrial Research. By 
John Horne, LL.D., F.R.S., ...... 1 
( Issued separately January 16, 1919.) 
II. Notices of Fellows, Honorary and Ordinary, recently deceased, 10 
{Issued separately May 9 , 1919.) 
III. Researches in Optical Activity. Part I : The Temperature- 
Rotation Curves for the Tartrates at Low Temperatures. 
By T. S. Patterson, D.Sc., Ph.D., Waltonian Lecturer and 
Lecturer in Organic Chemistry, University of Glasgow ; 
and K. L. Moudgill, B.Sc., late Robert Donaldson Scholar, 
University of Glasgow. Communicated by Professor 
Andrew Gray, F.R.S., .18 
{Issued separately May 16, 1919.) 
IV. Note on the Determinant of the Primary Minors of a Special 
Set of (n — l)-by-n Arrays. By Sir Thomas Muir, LL.D., 85 
{Issued separately May 16, 1919.) 
V. Factors of Circulants. By Professor W. H. Metzler, . . 41 
{Issued separately May 16, 1919.) 
VI. The Adsorption Isotherm at Low Concentrations. By A. M^ 
Williams, M.A., D.Sc. Communicated by Professor James 
Walker, F.R.S., . . . . . . . 48 
{Issued separately May 26, 1919.) 
VII. The Origin of Anticyclones and Depressions. By Lieut. John 
Logie, R.A.F., M.A., B.Sc., F.R.A.S. Communicated by 
the late George W. Jones, M.A., B.Sc., .... 56 
{Issued separately June 19, 1919.) 
VIII. On the Life-History and Bionomics of Myzus ribis, Linn. 
(Red-Currant Aphis). By Maud D. Haviland, Bathurst 
Student of Newnham College. Communicated' by Professor 
F. O. Bower, F.R.S., .78 
{Issued separately June 20, 1919.) 
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