Meetings of the Royal Society — Session 1899-1900. 
The 117th Session. 
General Statutory Meeting. Election of Office-Bearers, p. 1. 
FIRST ORDINARY MEETING. 
Monday , 4 tli December 1899. 
The Right Hon. Lord Kelvin, President, in the Chair. 
The Chairman gave an opening Statement, pp. 1-11. 
The following Communicatioris were read : — 
1. On the Rectal Gland of the Elasmobranchs. By Dr J. Crawford. 
Communicated by Dr Noel Paton. pp. 55-61. 
2. Obituary Notice of Charles Hayes Higgins, M.D. By Dr Sydney 
M'arsden. 
3. Further Investigations of the Life-History of the Salmon in Fresh 
Water. By Dr Noel Paton and M. I. Newbigin, D.Sc. pp. 44-54. 
4. On the Eliminant of a Set of General Ternary Quadrics. Part II. 
By Thomas Muir, LL.D. Trans., vol. 40, pp. 23-38. 
Dr John Penny, Dr John Henderson, Professor Graham 
Lusk, Mr Alfred C. Wilson, Dr John W. H. Eyre, and Mr 
James Bisset were balloted for, and declared duly elected Fellows 
of the Society. 
SECOND ORDINARY MEETING. 
Monday , 18 ill December 1899. 
The Rev. Prof. Duns, D.D., Vice-President, in the Chair. 
The following Communications were read : — 
1. The Presence of Enzymes in Normal and Pathological Tissues. 
By John Soutar MKendrick, M.D. Communicated by Professor 
M‘Kendrick. pp. 68-89. 
2. On the Convection of Heat by Air-Currents. By Professor A. 
Crichton Mitchell, D.Sc. Trans., vol. 40, pp. 39-47. 
PEOC. EOY. SOC. EDIN. — YOL. XXIII. 2 F 
