Niepce de St. Victor (M.) on two new
photochemical experiments, 260.
Nineveh, on the decomposed glass found
at, 11.

Northumberland, on some basaltic for-
mations in, 108.

Notonecta, on the method of production
of sound by a species of, 173.
Nourse (W. E. C.) on the colours of leaves
and petals, 138; on the habits and in- |
stincts of the chameleon, 153; on the
organs of the senses, and on the men-
tal perceptive faculties connected with
them, 171.

Numbers, on certain properties of the
powers of, 248.

Nyanza lake, on the discovery of, in
Central Africa, 266.

Object-glasses, on the focus of, 61.
Odling (W.) on Marsh's test for arsenic,
75; on the composition of Thames
water, ib.; on a new mode of bread-
making, 76.

Ogilvie (Dr. George) on the vegetative
axis of ferns, 139; on the genetic cycle
in organic nature, 172.

Oidema, on skeletons of, from the pleisto-
cene brick-clays of Stratheden, 120.
Oil, dugong, 256.

Oliphant (Laurence), notes on Japan, 194.
Opium poppy of China, on the cultivation
of the, 136.

Optic thalami, on certain imperfectly
recognized functions of the, 265.
Oreston, on the origin of the ossiferous
caverns at, 110; on the ossiferous fis-
sures at, 121.

Organization, on the molecular theory of,
265.

Orkney, on the climate of, 48.
Osborne (Capt. Sherard) on the Yang-tse-
kiang, and its future commerce, 196.
Ossiferous fissures at Oreston, on the, 121.
Oxides, on a symmetrical arrangement of,
259.

Page (D.) on the skeletons of Surf and
Eider ducks, with the remains of seals
from the pleistocene brick-clays of
Stratheden, 120; on the structure, affi-
nities and geological range of the crus-
tacean family Eurypteridæ, ib.
Painting, on the angular measurement of
the picture in, 64.

Palm, vegetable ivory, on some uses to
which the nuts of the, is applied, 130.
Pan for evaporating saccharine solutions
and other liquids at a temperature be-
low 180° Fahr., 230.

Parasitism among the Pycnogonidæ, on a
form of, 143.

Paris (Admiral) on the manœuvring of
screw vessels, 240.

Peach (W. C.) on fossil fish, new to the old
red sandstone of Caithness, 120; on
different subjects in natural history,
155; on the zoophytes of Caithness,
ib.

Pecten, on the structure of the shell in
some species of, 147.

Pengelly (W.) on the ossiferous fissures at
Oreston near Plymouth, 121.
Pentethyl-stibene, on, 66.

Peru, southern, on the geography of, 177.
Petals, on the colours of, 138.
Petherie (Consul), exploration of the White
Nile, 265.

Phalangista recently killed in the county
of Durham, on a species of, 149.
Pheasants, on the varieties and species of
new, recently introduced into England,

148.

Phillips (Major) on some curious discover-
ies concerning the settlement of the
seed of Abraham in Syria and Arabia,

197.

Phipson (Dr. T. L.) on some new cases of
phosphorescence by heat, 76; on the
composition of the shell of Cardium
edule, 77; on the composition of a re-
cently-formed rock on the coast of
Flanders, ib.

Phonautograph, on the, 62.
Phosphates, on combinations of earthy,
with alkalies, 88.

Phosphoroscope, on Becquerel's, 62.
Photochemical experiments, on two new,

260.

Photographs of fluorescent substances,
on, 69.

Photography, use of platinum in, 258.
Photometer, on a new,
62.
Physics, 1, 58, 245.
Physiology, 126, 159, 265.
Phytelephas macrocarpa, on some uses to
which the nuts of the, are applied,

130.

Planetary orbits, on the inclination of
the, 34.

Plants, on remarkable, found in Braemar,

133; on the aversion of certain, to the
neighbourhood of each other, ib.; on
the temperature of the flowers and
leaves of, 135; on the theory of the
metamorphosis of, 136; cycadaceous,
grown in England, 142.
Platinum, use of, in photography, 258.
Playfair (Dr. Lyon), address to the Che-

mical Section, 65; on a symmetrical

Ponton (Mungo) on certain laws of chro-
matic dispersion, 15; on the law of
the wave-lengths corresponding to cer-
tain points in the solar spectrum, 20.
Porro (M.), portable apparatus for ana-
lysing light, 63.

Post-pliocene deposits, on the occurrence
of works of human art in, 93.
Pottery, on a fragment of, found in super-
ficial deposits in Paris, 124.
Price (John) on slickensides, 123; on the
genus Cydippe, 155.

Propellers, on the comparative value of,
243; on Robertson's patent chain, ib.
Pterichthys, on the restoration of, in 'The
Testimony of the Rocks,' 263.
Pycnogonidæ, on a form of parasitism
among the, 143.

Quarries, granite, of Aberdeen and Kin-
cardineshire, 235.

Quartzite, on the relations of the gneiss,
red sandstone and, in the North-west
Highlands, 119.

Quaternions, on an application of, to the
geometry of Fresnel's wave-surface,

248.

Radiguel (M. A.) on a fragment of pot-
tery found in superficial deposits in
Paris, 124.

Railway carriages, on gas carriages for
lighting, with coal-gas instead of oil,
235.

Railway communication between the At-
lantic and Pacific oceans, on the, 266.
Rain, on the fall of, in Forfarshire, 47;
tables of, registered at Georgetown,
Demerara, 52.

Rainey (George) on the structure and
mode of formation of starch-granules,
according to the principles of molecular
science, 140.

Rankin (Rev. T.), meteorological obser-
vations made at Huggate, Yorkshire,

Ransome (Frederick) on soluble silicates,
and some of their applications, 78.
Redfern (Dr.) on the method of produc-
tion of sound by a species of Notonecta,
173; on the admixture of nervous and
muscular fibres in the nerves of the
Hirudo medicinalis and other leeches,
174; on the structure of the otoliths of
the cod (Gadus Morrhua), ib.
Refraction, on a new species of double,
10.

Reptilian remains, on the newly dis-
covered, from the neighbourhood of
Elgin, 261.

Robb (John) on the comparative value of
propellers, 243.

Robertson's patent chain propeller, 243.
Rocks, volcanic, in Italy, which appear to
have been subjected to metamorphic
action, 102; on the chronology of the
trap, of Scotland, 106; stratified, in
Aberdeenshire, on the connexion of the
granite with the, 114.

Rocky Mountains, description of passes
through the, 180.

Rogers (Prof. H. D.) on some observa-
tions on the parallel roads of Glenroy,
265.

Roman camp at Ardoch, on the, 183.
Rosse (The Earl of), introductory re-

marks to the Mathematical Section, 1.
Ruhmkorff (M.) on a new electro-medical
apparatus, 62.

Russian trade, on the, with Central Asia,
186.

Saccharine solutions and other liquids, on
a pan for evaporating, 230.
Salmonidæ, on the classification of the,
153.

Salts, on the comparative value of certain,
for rendering fibrous substances non-
inflammable, 86; on a symmetrical
arrangement of, 259.

Sandeman (P.) on tables of rain registered
at Georgetown, Demerara, 52.
Sandstone:-
:-on Dura Den, 97; of Kin-
goodie, on a horseshoe nail found in
the red, 101; yellow, of Elgin and Los-
siemouth, 109; on some new fossils
from the old red, of Caithness, 115;
on the age of the reptilian, of Moray-
shire, ib.; on new fossils from the lower
old red, 116; on the relations of the
red, gneiss, and quartzite in the North-
west Highlands, 119; on fossil fish, new
to the old red, of Caithness, 120; on
some fishes and tracks from the old
red, of Herefordshire, 124; on some
old red fossils, 126.

Saturn's rings, on an instrument for ex-
hibiting the motions of, 62.
Scotland-on the chronology of the trap
rocks of, 106; on the drift beds and
boulders of the north of, 114; on the
sculptured stones of, 197; on illegiti-
macy in the large towns of, 224.
Screw propeller, on an instrument for
measuring the thrust of the, 237.
Screw vessels, on the manoeuvring of, 240.
Seal, on the skull of a, from the Gulf of
California, 153.

Sedgwick (Rev. Prof.) on faults in Cum-

berland and Lancashire, 265.
Segelcke (M. Thomas) on the current
method for estimating the cellular mat-
ter, or "woody-fibre," in vegetable
food-stuffs, 79.

Senses, on the organs of the, and on the
mental perceptive faculties connected
with them, 171.

Shaw (Norton) on the proposed railway
communication between the Atlantic
and Pacific oceans, viâ the United
States of America, 266.
Shortrede (Colonel) on calculating lunars,
4; on an improvement in the propor-
tional compass, 63; on decimal coin-
age, 223.

Signals, on the retardation of, through
long submarine cables, 251.

Silicates, on soluble, and some of their
applications, 78.

Silk trees of western India, on some pecu-
liarities of the, 132.
Silurian fossils, on the discovery of, in the
slates of Downshire, 260.

Skull, of a manatee from Old Calabar,
150; of a wombat from the bone-caves
of Australia, 152.
Slickensides, on, 123.

Small-pox and vaccination, statistics of,
in the United Kingdom, 223.
Smith (Dr. E.) on the sequence in the
phenomena observed in man under the
influence of alcohol, 265.

Smith (J.) on the relations of a circle
inscribed in a square, 10; on the pro-
duction of colour and the theory of
light, 22.

Smoke, on coal burning without, 230.
Snail's heart, on the beat of the, 160.
Society of Arts' Examinations, on some
results of the, 214.

Solar spectrum, on the law of the wave-
lengths corresponding to certain points
in the, 20.

Somateria, on skeletons of, from the plei-
stocene brick-clays of Stratheden,

120.

Sorby (H. C.) on the origin of “cone-in-
cone," 124.

Sound, on the method of production of,
by a species of Notonecta, 173.
Spectrum, on the mixture of the colours
of the, 15.

Speke (Captain) on the commercial re-
sources of Zanzibar on the east coast of
Africa, 266; discovery of lake Nyanza
in Central Africa, ib.

Spence (Peter) on Robertson's patent
chain propeller, 243.

Spencer (Thomas) on the supply and
purification of water, 83.
Sphenopteris Hookeri, on, 98.
Staffordshire, North, on the coal strata of,
103.

Stainton (H. T.) on the distribution of
British butterflies, 156.

Starch-granules, on the structure and
mode of formation of, 140.
Stars, on three variable, as observed con-
secutively for six years, 36.
Statistical Science, 200.
Statistical tables, on the probability of
uniformity in, 3.

Statistics, vital and economic, of Aber-
deen, 226.

Steam, experimental researches to deter-
mine the density of, at various tempe-
ratures, 233.

Steamers, on Indian river, 235.
Steam-vessels, on the performance of, 237.
Steel, on the strength of, 242.
Stereomonoscope, on the, 61.
Stereoscope, on producing the idea of
distance in the, 61.
Stereoscopic angle, on the, 61.
Stewart (B.) on radiant heat, 23.
Stokes (Major J.), notes on the Lower
Danube, 197.

Stones, sculptured, of Scotland, on the,

197.

Stoney (G. Johnstone) on the propagation
of waves, 9; on the nomenclature of
metrical measures of length, 243.
Strang (John) on church-building in
Glasgow, 223.

Strontia, on crystallized bichromate of, 68.
Strychnine, on the action of concentrated

sulphuric acid on cubebin in relation to
the test for, 256.

Stuart (John) on the sculptured stones of
Scotland, 197.

Sun's surface, on the distribution of heat
over the, 50.

Sutton (Thomas) on a new photographic
lens which gives images entirely free
from distortion, 63.

Sykes (Colonel), introductory address to

the Statistical Section, 200; on the
past, present, and prospective financial
condition of British India, 223.
Symonds (G. J.) on thunder-storms, 54.
Symonds (Rev. W. S.) on some fishes
and tracks from the passage rocks and
from the old red sandstone of Here-
fordshire, 124; on the fish-rain at
Aberdare in Glamorganshire, 158; on
drift pebbles found in the stomach of a
cow, ib.

Synge (Major) on rapid communication
between the Atlantic and the Pacific,
viâ British North America, 200.
Syria, on the eastern desert of, 180.
Syrrhaptes paradoxus, on, 265.

Tannin, quantitative estimation of, in
some tanning materials, 75.
Tarai, on the inhabitants of the, 177.
Tate (Thomas), experimental researches
to determine the density of steam at
various temperatures, 233.

Taxation, on some questions relating to
the incidence of, 216.

Tayler (A.) on the true action of what are
called heat-diffusers, 244.

Tayler (James) on the Arctic flora, 140;
on Falco Islandicus and F. Groenlandi-
cus, 158.

Telegraphic cables, on the submergence
of, 11.

Telegraphic conductors, on some of the
methods adopted for ascertaining the
locality and nature of defects in, 252.
Temperature, on the reduction of periodi-

cal variations of underground, 54.
Temperatures, on a method of reducing
observations of underground, 245.
Tendons, on the repair of, after their
subcutaneous division, 160.
Tennant (Prof. J.), notes on a gold nugget
from Australia, 85.

Thames nuisance, on an application of
the moving power arising from tides, to
obviate the, 237.

Thames water, on the composition of, 75.
Thermometric stations on Mont Blanc,
on the establishment of, 56.
Thomson (Prof. J.) on recent theories and
experiments on ice at its melting-
point, 23.

Thomson (Prof. W.) on electrical fre-
quency, 26; on the discharge of a coiled
electric cable, ib.; on the necessity for
incessant recording, and for simultane-
ous observations in different localities,
to investigate atmospheric electricity,
27; on the reduction of periodical varia-
tions of underground temperature, with

applications to the Edinburgh obser-
vations, 54.

Thost (C. G.) on the rocks and minerals
in the property of the Marquis of
Breadalbane, 125.
Thunder-storms, on, 54.
Tides, on an application of the moving
power arising from, 237.

Topp (Adam) on models of fire-escapes,
boat-lowering apparatus, &c., 244.
Towler (G. V.) on the cause of magnet-
ism, 28.

Towson (John T.) on changes of deviation
of the compass on board iron ships by
heeling, with experiments on board
the City of Baltimore, Aphrodite,
Simla, and Slieve Donard, 28.

Trees, on the aversion of certain, to the

neighbourhood of each other, 133; on
the growth of, in continental and in-
sular climates, 140.
Tubulariadæ, new genus and species of,

142.

Vaccination and small-pox, statistics of,
in the United Kingdom, 223.
Valentine (James) on illegitimacy in
Aberdeen and the other large towns of
Scotland, 224; on the statistics, chiefly
vital and economic, of Aberdeen, 226.
Valpy (R.) on the British trade with
India, 227.

Vapour of the atmosphere, on the aque-
ous, 50.

Variations, on the calculus of, 5.
Varley (Cromwell F.) on some of the
methods adopted for ascertaining the
locality and nature of defects in tele-
graphic conductors, 252.

Vaughan (Daniel) on the effects of the

earth's rotation on atmospheric move-
ments, 41; on the growth of trees in
continental and insular climates, 140.
Versmann (F.) on the comparative value
of certain salts for rendering fibrous
substances non-inflammable, 86.
Victoria, on the statistics of the trade and
progress of the colony of, 218.

Voelcker (Professor) on combinations of
earthy phosphates with alkalies, 88.
Volcanic eruptions and earthquakes in
China and Japan, on certain pheno-
mena attendant on, 115.

Walker (J. J.) on the iris seen on the
surface of water, 29.

Wallace (W.) on the equivalent of bro-
mine, 88; on proposed improvements
in the manufacture of kelp, ib.
Water:-on the transmission of electricity
through, 13; on the iris seen on the
surface of, 29; on the composition of
Thames, 75; on the supply and puri-
fication of, 83; on distilled, 256.
Water-supply afforded by a spring at
Ashey Down, on the, 114.

Wave-lengths, on the law of the, corre-
sponding to certain points in the solar
spectrum, 20.

Waves, on the propagation of, 9; atmo-
spheric, 50.

Wealden, on the supposed, near Elgin, 264.
White Nile, exploration of the, 265.
Willich (C. M.) on the angles of dock-
gates and the cells of bees, 10.
Wilson (A. S. S.) on a system of moving
bodies, 43.

Wilson (Prof. G.) on some of the stages
which led to the invention of the modern

air-pump, 89; on the employment of
the electrical eel, Gymnotus electricus,
as a medical shock-machine, by the na-
tives of Surinam, 158; on the statistics
of colour-blindness, 228.
Wolverhampton waterworks, on an arte-
sian well in the new red sandstone at
the, 229.

Wombat, on the skull of a, from the bone-

caves of Australia, 152.

Wood (E. A.) on a mode for suspending,
disconnecting and hoisting boats at-
tached to sailing ships and steamers
at sea, 245.

Wren's (Sir Christopher) cipher, contain-
ing three methods of finding the lon-
gitude, 34.

Wyllie (J.) on some old red sandstone
fossils, 126.