11 
Monday , 5 th January 1874. 
A new Method of Determining the Material and Thermal 
Diffusivities of Fluids. By Sir William Thomson, 
page 
229 
Continuants — A New Special Class of Determinants. By 
Thomas Muir, M.A., Assistant to the Professor of 
Mathematics in the University of Glasgow, . . 229 
Remarks upon the Footprints of the Dinornis in the Sand 
Rock at Poverty Bay, New Zealand, and upon its recent 
extinction. By T. H. Cockburn-Hood, F.G.S., . 236 
Monday , 19^ January 1874. 
Supplementary Notice of the Fossil Trees of Craigleith 
Quarry. By Sir Robert Ciiristison, Bart., Hon. Vice- 
President, R.S.E., &c., . . . . 241 
On a Method of Demonstrating the Relations of the Con- 
volutions of the Brain to the Surface of the Head. By 
Professor Turner, ..... 243 
On some Peculiarities in the Embryogeny of Tropceolum 
speciosum, Endl. & Poepp., and T. peregrinum , L. By 
Professor Alexander Dickson, . . . 247 
Notes on Mr Sang’s Communication of 7tli April 1873 on 
a Singular Property possessed by the Fluid enclosed in 
Crystal Cavities in Iceland Spar. (1.) By Professor 
Tait ; (2.) By Professor Swan, . . . 247 
Preliminary Note on the sense of Rotation and the Function 
of the Semicircular Canals of the Internal Ear. By 
Professor A. Crum- Brown, .... 255 
•' P tVi 
Monday , 2d February 1874. 
Biographical Notice of J. S. Mill. By Professor Fraser, . 259 
Obituary Notice of the Rev. Dr Guthrie. By the Rev. Dr 
Lindsay Alexander, . . . . .273 
Obituary Notice of Mr R. W, Thomson. By Professor 
Fleeming Jenkin, ..... 278 
Obituary Notice of Archibald Smith. By Sir William 
Thomson, . . . . . 282 
For continuation of Contents, see pp. 3 and 4 of Cover. 
