Index. 
827 
Tait (Professor) on some Quaternion 
Transformations, 501. 
on an Expression for the 
Potential of a Surface Distribution, 
&c., 503. 
Note on Spherical Harmonics, 
689 
On Thermo-Electricity, 597. 
Note on a Singular Property 
of the Retina, 605. 
On the Operator <p (v), 607. 
Note on Pendulum Motion, 
608. 
Address on Thermo-Electri- 
city, 644. 
Note on Strain-Function, 667. 
Second Note on the Strain- 
Function, 682. 
• Note on the Rate of Cooling 
at High Temperatures, 682. 
on Thermo-Electricity — (Cir- 
cuits with more than one Neutral 
Point), 773. 
on a Method of Exhibiting 
the Sympathy of Pendulums, 779. 
on some Quaternion Integrals, 
784. 
Talbot (H. F.), Note on some Anoma- 
lous Spectra, 408. 
Note on the Early History of 
Spectrum Analysis, 461. 
on some Optical Experi- 
ments — 
I. On a New Mode of Observing 
certain Spectra, 466. 
II. On the Nicol Prism, 468. 
Taxes, on the Principles which Re- 
gulate the Incidence of, 618. 
Temperature, Rate of Cooling, 682. 
Solar, Recent Estimates of, 
697. 
— Remarks on the Deep-Water 
Temperature of Loch Lomond, 
Loch Katrine, and Loch Tay, 791. 
Terms, Scholastic, Vetus logica and 
Nova logica , with a Remark upon 
the corresponding Terms Antiqui 
and Moderni, 441. 
Thebo-Lactic Acid, 103. 
Theorems, Green’s, and other Allied, 
168. 
Thermo-Electricity, 597. 
(Circuits with more than one 
Neutral Point), 773. 
Thomson (Fraser, M.D.), Obituary 
Notice of, 533. 
Thomson (Sir William) on the Forces 
experienced by Solids Immersed in 
a Moving Liquid, 60. 
Thomson (Sir William) on the 
Equilibrium of Vapour at a Curved 
Surface of Liquid, 63. 
• on the Motion of Free Solids 
through a Liquid, 384. 
on Vortex Motion, 575. 
on the Ultramundane Cor- 
puscules of Le Sage, 577. 
Remarks on Contact - Elec- 
tricity, 648. 
on the Motion of any Number 
of Rigid Solids of any Shapes 
through a Liquid in a State of 
Irrotational Cyclic Motion, having 
for its Core any Fixed Rigid Per- 
forated Solid, 668. 
Thomson (Professor Wyville), Ad- 
dress on the Condition of the 
Depths of the Sea, 144. 
on the Structure of the 
Palaeozoic Crinoids, 415. 
Notice of a New Family of 
the Echinodermata, 615. 
on the Crinoids of the “ Por- 
cupine ” Deep-Sea Dredging Ex- 
pedition, 764. 
Tracey (Captain), Notes on the Ante- 
chamber of tbe Great Pyramid, 422. 
Trevandrum, Magnetic Declination at, 
756. 
Trimethylsulphin, on tbe Physiolo- 
gical Action of the Salts of, 663. 
Tubifex, the Structure of, 166. 
Turner (Professor), Preliminary No- 
tice of the Great Fin Whale cap- 
tured at Longniddry, 34. 
on the Bones of a Seal, 105. 
on the Capture of a Sperm 
Whale on the Coast of Argyllshire, 
with a Notice of other Specimens 
caught on the Coast of Scotland, 
365. 
on the Gravid Uterus, and 
Arrangement of the Foetal Mem- 
branes in the Cetacea, 407. 
Additional Notes on the Oc- 
currence of the Sperm Whale in 
the Scottish Seas, 632. 
Some Observations on the 
Dentition of the Narwhal ( Mono- 
don monoceros), 759. 
on the Maternal Sinus Vas- 
cular System of the Human Pla- 
centa, 760. 
on the Occurrence of Ziphius 
cavirostris in the Shetland Seas, and 
a Comparison of its Skull with that 
of Sowerby’s Whale ( Mesoplodon 
Sowerbyi ), 760. 
