662 
Index. 
Tait (Professor) on a Singular Theory 
given by Abel, 440. 
Equipotential Surfaces for a 
Straight Wire, 443. 
Fundamental Principles in 
Statics, 443. 
Photographic Records of the 
Sparks from a Holtz Machine, 484. 
Capillary Phenomena at the 
Surface of Separation, 485. 
Determination of the Surface- 
Tension of Liquids, 485. 
Photographs of Electric Sparks 
taken in Cold and Heated Air, 
491. 
On the Thermo-Electric Pro- 
perties of Pure Nickel, 182. 
On the Strain-Function, 84. 
— On a Thermo-Electric Dia- 
gram, 208. 
— Note on the Transformation 
of Double and Triple Integrals, 
209. 
Note on various Possible Ex- 
pressions for the Force exerted by 
an Element of one Linear Con- 
ductor on an Element of another, 
220 . 
Notes on Mr Sang’s Com- 
munication of 7th April 1873, on 
Singular Property possessed by the 
Fluid enclosed in Crystal Cavities 
in Iceland Spar, 247. 
— On the Flow of Water through 
Fine Tubes, 208. 
* and Dewar (James), Preli- 
minary Note, On a new Method of 
obtaining very perfect Vacua, 348. 
— On Atmospheric Electricity, 
349. 
Application of Sir William 
Thomson’s Dead Beat Arrange- 
ment to Chemical Balances, 490. 
Electric Resistance of Iron at 
High Temperatures, 491. 
On Electric Images, 623. 
On the Origin of Atmospheric 
Electricity, 623. 
Talbot (W. H. Fox), Essay towards 
the General Solution of Numerical 
Equations of all Degrees, 544. 
Tennent (Robert), Theory of the 
Causes by which Storms progress 
in an Easterly Direction over the 
British Isles, &c., 612. 
Thermal Conductivity of Ice, 62. 
Thermo-Electric Diagram, 47, 208. 
Thermo-Electric Properties of Pure 
Nickel, 182. 
Thomson (R. W.) on the Formation 
of Coal and Changes produced in 
the Composition of the Strata, by 
the Solvent Action of Water, 68. 
Thomson (Sir William), Homocliei- 
ral and Heterocheiral Similarity, 
70. 
On Vortex Motion, 80. 
On New Method of deter- 
mining the Material and Thermal 
Diffusivities of Fluids, 229. 
Diagrams to illustrate Capil • 
lary Surfaces of Revolution, 500. 
Obituary Notice of Archibald 
Smith, 282. 
The Kinetic Theory of the 
Dissipation of Energy, 325. 
Diffusion of Gases, 331. 
On a new Form of Mariners’ 
Compass, 363. 
Tide Calculating Machine — 
Tide-Gauge, 445. 
Oscillation of a System of 
Bodies with Rotating Motions, 490, 
521. 
and Perry (John) on the 
Capillary Surface of Evolution, 
520. 
Theory of the Spining-Top, 
521. 
Titaniferous Iron Sand, North Ber- 
wick, 523. 
Traquair (R. H.) on the Structure 
and Systematic Position of Tristi- 
chopterus alatus , Egerton, 513. 
- — On some Permian Fishes, 
525. 
Tristichopterus alatus, Structure and 
Systematic Position of, 513. 
Tropmolum speciosum and T. pere- 
grinum, Embryogeny of, 247. 
Tuke (Dr Batty), on the Anatomy of 
Pia Mater, 534. 
Turner (Professor), Contribution to 
the Visceral Anatomy of the Green- 
land Shark ( Lcemargus borealis), 81. 
— On the Placentation of the 
Sloths, 134. 
Placentation of the Seals, 
137. 
• Method of Demonstrating the 
Relations of the Convolutions of the 
Brain to the Surface of the Head, 
243. 
Placentation of Ruminants, 
537. 
Upheaval of Scotland in its Central 
Parts, 49, 
