CONTENTS. 
1. The Endowment of Scientific and Industrial Research. By John Horne, LL.D., 
F.R.S. Issued separately January 16, 1919, . 
2. Notices of Fellows, Honorary and Ordinary, recently deceased. Issued separ- 
ately May 9, 1919, ........ 
3. 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. 
Issued separately May 16, 1919, . 
4. Note on the Determinant of the Primary Minors of a Special Set of (n — l)-by-n 
Arrays. By Sir Thomas Muir, LL.D. Issued separately May 16, 1919, 
5. Factors of Circulants. By Professor W. H. Metzler. Issued separately May 16, 
1919, .......... 
6. The Adsorption Isotherm at Low Concentrations. By A. M. Williams, M.A., 
D.Sc. Communicated by Professor James Walker, F.R.S. Issued separately 
May 26, 1919, ......... 
7. The Origin of Anticyclones and Depressions. By Lieut. John Logie, R.A.F., 
M.A., B.Sc., F.R.A.S. Issued separately June 19, 1919, 
8. On the Life-History and Bionomics of Myzus ribis , Linn. (Red-Currant Aphis). 
By Maud D. Haviland, Bathurst Student of Newnham College. Issued 
separately June 20, 1919, ....... 
9. On Hamilton’s Principle and the Modified Function in Analytical Dynamics. 
By G. H. Livens, M.A. Communicated by Professor E. T. Whittaker, F.R.S. 
Issued separately July 3, 1919, . 
10. The Cooling of the Soil at Night, with Special Reference to late Spring Frosts. 
By Captain T. Bedford Franklin, B.A. (Cantab.). Communicated by The 
General Secretary. Issued separately August 5, 1919, 
11. On the Presence of Formic Acid in the Stinging Hairs of the Nettle. By 
Leonard Dobbin, Ph.D. Issued separately August 5, 1919, 
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