viii 
Contents. 
Election of Office-Bearers, . . . . . .416 
Presentation of the Keith Prize to Professor Tait, . . .415 
Opening Address on the Stability of Steady Motion. By the Presi- 
dent, . . . . . . . 420 
Remarks on the Great Logarithmic and Trigonometrical Tables com- 
puted in the Bureau du Cadastre under the direction of M. Prony. 
By Edward Sang, . . . . . . 421 
On the Elimination of /3, y, from the conditions of integrability of 
S uoc^p, S ufllp, S uylp. By G. Plarr, Esq. Communicated by 
Professor Tait, 436 
The Development of the Ova, and the Structure of the Ovary, in Man 
and other Mammals. By James Foulis, M.D. (Edin.) Communi- 
cated by Professor Turner, . . . . . .437 
Mathematical Notes. By Professor Tait — 
1. On a singular Theorem given by Abel, . . . 440 
2. On the Equipotential Surfaces for a Straight Wire, . 443 
3. On a Fundamental Principle in Statics, . . . 443 
Exhibition and Description by the President of his Tide Calculating 
Machine, also his Improved Tide-Gauge ; he also described certain 
Capillary Phenomena, with Experiments, .... 445 
Biographical Notice of Lord Colonsay. By the Hon. Lord Neaves, . 445 
Biographical Notice of Cosmo Innes. By the Hon. Lord Neaves, . 453 
Biographical Notice of Francis Deas. By the Hon. Lord Neaves, . 461 
Biographical Notice of Adam Black. By the Rev. Dr Lindsay 
Alexander, . . . . . . . .467 
Biographical Notice of Sheriff Cleghorn. By David Maclagan, Esq., 
C.A., . 468 
Biographical Notice of Henry Stephens. By Professor Maclagan, . 469 
Biographical Notice of Christopher Hansteen. By Alexander Buchan, 
Esq., . .473 
Biographical Notice of Jacques Adolphe Lambert Quetelet. By 
Alexander Buchan, Esq., . . . . .474 
Biographical Notice of George Berry. By George Barclay, Esq., . 476 
On the Complete Theory of the Stone Arch. By Edward Sang, 
Esq., ........ 479 
On the Application of Angstrom’s Method to the Conductivity of 
Wood. By C. G. Knott and A. Macfarlane. Communicated by 
Professor Tait, . . . . . . .481 
Notice of Striated Rock Surfaces on North Berwick Law. By David 
Stevenson, V.P.R.S.E., Civil Engineer, .... 481 
Laboratory Notes. By Professor Tait — 
a. Photographic Records of the Sparks from a Holtz Machine, 484 
b. Determination of the Surface-Tension of Liquids by the 
Ripples produced by a Tuning-Fork, . . . 485 
c. Capillary Phenomena at the Surface of Separation of two 
Liquids, . . . . . . . 485 
