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, 
589. 
- 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 Modcrni, 441. 
Tliebo-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 the Great Pyramid, 422. 
Trevandrum, Magnetic Declination at, 
756. 
Trimetliylsulphin, on the 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 Zipliius 
cavirostris in the Shetland Seas, and 
a Comparison of its Skull with that 
of Sowerby’s Whale ( Mesoplodon 
Sowerbyi ), 760. 
