Index. 
509 
Peddie ("W.). On the Law of Elastic 
Fatigue {Abstract), 90. 
Note on the Relations 
amongst the Thermo-and Electro- 
magnetic Effects ( Title only), 
441. 
and Shand (A. B. ). On the 
Thermo - electric Properties of 
Solid and Liquid Mercury, 15. 
On the Thermo-electric 
Properties of Solid Mercury 
{Abstract), 422. 
Perseus, Note on the New Star in, 
by Professor Ralph Copeland, 365- 
369. 
Pfaffians, Theory of. See, under 
Determinants. 
Phase-Rule (Gibbs), Simple Proof of, 
by Professor Kuenen, 317-318. 
Photometer, Swan’s Prism, com- 
monly called Lummer and Brod- 
hun’s Photometer, by C. G. Knott, 
12-14. 
Pissodes, Biology of the genus, by 
R. Stewart MacDougall, 319-358. 
Prizes. Gunning Victoria Jubilee 
Prize (1896-1900), awarded to Dr 
T. D. Anderson, 448. 
— Keith Prize (1897 - 99), 
awarded to Dr James Burgess, 456. 
Makdougall - Brisbane Prize 
(1898-1901), awarded to Dr R. H. 
Traquair, 451. 
Prussian Academy of Sciences, 
Address presented to the, on the 
occasion of its Bicentenary Cele- 
brations, 438. 
Punnett (R. C.). Observations on 
some Nemerteans from Singapore, 
91-92. 
Quaternions. On a Claim recently 
made for Gauss to the Invention 
(not the Discovery) of Quaternions, 
by Professor Tait, 17-23. 
Professor Klein’s View of 
Quaternions ; a Criticism, by C. 
G. Knott, 24-34. 
Hyperbolic Quaternions, by 
Alexander Macfarlane, 169-180. 
Rectal Gland of the Elasmobranchs, 
by J. Crawford, 55. 
Robertson (W. G. Aitchison). Note 
on the Activity of the Saliva in 
Diseased Conditions of the Body, 
155-157. 
Rutherford (Professor "William). 
Notice of, in President’s Address, 
2 , 10 . 
Saliva. Activity of, in Diseased 
Conditions of the Body, by W. G. 
Aitchison Robertson, 155. 
Salmon. Investigations into the 
Life-History of Salmon in Fresh 
"Water, by D. Noel Paton and M. I. 
Newbigin, 44-54. Factors deter- 
minining Migration from Sea to 
River, 44. Nature of the Phos- 
phorous Compounds of the Muscle 
of Salmon, and the Synthesis of 
the Organic Phosphorous \ Com- 
pounds of Testes and Ovaries, 51. 
Source of the Pigment of Salmon 
Muscle, 52- 
Scolytus {Eccoptogaster) multistriatus 
(Marsh), Biology and Forest Im- 
portance of, by R. Stewart Mac- 
Dougall, 359-364. 
Sea- Water, Examination of, by an 
Optical Method, by J. J. Manley, 
35-43. 
Relation of the Seaweed Ulva 
latissima to the Sewage Pollution 
of, by Professor Letts and John 
Hawthorne, 268-295. 
Sewage Pollution of Sea-Water, 
Relation of the Seaweed Ulva 
latissima to the, by Professor Letts 
and John Hawthorne, 268-295. 
Shand (Alex. B. ). See Peddie (W. ). 
Sibbald (Sir John). On the Statistics 
of Suicide in Scotland {Title only), 
431. 
Silver Salts, Action of, on Solution 
of Ammonium Persulphate, by 
Hugh Marshall, 163. 
Simpson (J. Y.). , Observations on 
Binary Fission in the Life -History 
of Ciliata, 401-421. 
Skew Determinants. See under 
Determinants. 
Smyth (Professor Piazzi). Notice 
of, in President’s Address, 438. 
Bequest to the Society, 439. 
Solar Radiation and Earth Tempera- 
tures, by C. G. Knott, 296-311. 
Star (New) in Perseus, by Ralph 
Copeland, 365-369. 
Steel and Iron. Torsional Constants 
of, by "W. Peddie and A. B. Shand, 
16. 
Stokes (Sir George G., Bart.) 
Address presented to, on the 
occasion of the Jubilee Celebration 
of his Appointment as Lucasian 
Professor of Mathematics in Cam- 
bridge University, 4. 
Struthers (Sir John). Notice of, in 
President’s Address, 2, 10. 
Swan’s (Wm.) Prism Photometer, 
2 L 
PROC. ROY. SOC. EDIN. — VOL. XXIII. 
