AFFINITY, observations on, 81.
Air, on the absorption of light by the,
293.

Air-pump, on a metallic conductor to
replace the vulcanite tube used
with Bianchi's, 442.
Aneroid barometers, experiments on,
65.

Babingtonite, analysis of, 328.
Baker (W.) on the cause of a pink
colour in white-lead corrosions,
344.

Ball (Prof. R.) on lecture experiments
to illustrate the laws of motion,
332.

Bayma (Prof. J.) on the fundamental
principles of molecular physics,
182, 275, 348, 431.

Bianchi's air-pump, on a metallic con-
nector to replace the vulcanite tube
used with, 442.
Books, new:-Fownes's Manual of
Elementary Chemistry, 62; Guth-
rie's Elements of Heat and of Non-
metallic Chemistry, 65; Lockyer's
Elementary Lessons in Astronomy,
141; Barff's Introduction to Sci-
entific Chemistry, 304; Peacock's
Evidences of vast Sinkings of Land
&c., 382; Peacock's Steam as a
motive power in Earthquakes and
Volcanoes, 383.

Bronzes, on the production of a beau-
tiful patina on, 401.

Bunsen (Prof. R.) on the washing of
precipitates, 1.

Carbonic oxide, on the spectrum of,

214.

Carpmael (E.) on Tyndall's cometary
theory, 403.

Carré (F.) on a friction and induc-

tion electrical machine, 160.
Chapman (E. T.) on the action of de-
hydrating agents on organic bodies,
20.

Chemical compounds, on the magne-
tism of, 314.

constitution and its relation to
physical and physiological proper-
ties, on, 395.

Chemistry, on statical and dynamical
ideas in, 461.

Circle, on a new continued fraction
applicable to the quadrature of the,
373.

Clausius (Prof. R.) on the new con-

ception of electrodynamic pheno-
mena suggested by Gauss, 445.
Coal-gas, on the spectrum of, 209.
Cometary matter, on the origin and

deportment of visible, 241,403,460.
Comets on some spectrum observa-
tions of, 456.

Copper salts, on the magnetism of,
315.

Croll (J.) on the physical cause of the
motion of glaciers, 201.
Crookes (W.) on the measurement
of the luminous intensity of light,
227.
Croullebois (M.) on the dispersive
power of gases and vapours, 75.
Crum Brown (Dr. A.) on chemical
constitution, and its relation to
physical and physiological proper-
ties, 395.

Cyanides, on isomerism amongst the
organic, 22.

Daylight, on a method of measuring
the intensity of total, 74.
Delessite, analysis of, 269.
Deville (H. St.-Claire) on the tempe-
rature of flames, and its relations
with the pressure, 111.

Dewar (J.) on the motion of a palla-
dium plate during the formation of
hydrogenium, 424.

Diathermometer, description of a, 468.
Dissociation, observations on, 156.
Douglas (J. C.) on shadow-optome-
ters, 340.

Dufour (M.) on a development of

heat which accompanies the burst-
ting of Prince Rupert's drops, 478.
Dumas (M.) on affinity, 81.

Edlund (E.) on the electromotive

force of the electric spark, 41.
Edmonds (R.) on extraordinary agi-

tations of the sea, 35.

Electric spark an electromotor, 41.

Electrical machine, on a friction and
induction, 160.
Electrodes, on the electrical polarity
and inequality of the amalgamated
zinc, in sulphate of zinc, 475.
Electrodynamic phenomena, on the
new conception of, suggested by
Gauss, 445.

Electrophorus machine, on the quan-
tity of electricity produced by the,
expressed in absolute measure,
236.

Equation in differences of the second
order, on an, 225.

Ethylene-sodium, on the compounds
of, and of its homologues, 117, 175;
on some reactions of hydrated ox-
ide of, 358.

Flame of a Bunsen's burner, on the
shape of the, 160.

Flames, on the temperature of, and
its relations with the pressure,
111; on the temperature of, and
dissociation, 156.

Fluid, on the uniform motion of an
imperfect, 370.
Forbes's (D.) researches in British
mineralogy, 321.

Gases, on the dispersive power of,
75; on the spectra of the flames
of, containing carbon, 208; on the
spectra of certain, in Geissler's
tubes, 405.

Gauss, on the new conception of
electrodynamic phenomena sug-
gested by, 445.

Geological Society, proceedings of
the, 145, 309.

time, and the probable date of
the glacial period, on, 206.
Gibbs (W. B.) on Tyndall's cometary
theory, 404.

Glaciers, on the physical cause of the
motion of, 201, 229, 363.
Gold, analyses of native, 321.
Gore (G.) on hydrofluoric acid, 470.
Graham (T.) on the relation of hydro-
gen to palladium, 122.

Granites, on a comparison of the, of
Cornwall and Devon with those of
Leinster and Mourne, 306.
Guthrie (Prof. F.) on the thermal re-
sistance of liquids, 468.
Haidinger (W. von) on the luminous,
thermal, and acoustic phenomena
attending the fall of meteorites,
246.
Haughton (The Rev. S.) on the gra-

nites of Cornwall and Devon, Lein-
ster and Mourne, 306.
Heat, on the production of, by the
rotation of a disk in vacuum, 26,
97, 287; on a development of,
which accompanies the bursting of
Prince Rupert's drops, 478.
Herschel (Lieut. J.) on the lightning-
spectrum, 142.

How (Prof.) on the mineralogy of
Nova Scotia, 264.

Huggins (W.) on some spectrum ob-
servations of comets, 456.
Hydrofluoric acid, researches on,
470.

Hydrogen, on the spectra of, 405.
Hydrogenium, observations on, 122;
on the motion of a palladium plate
during the formation of, 424, 474.
Kohlrausch (Prof. F.) on the quan-
tity of electricity produced by the
electrophorus machine, expressed
in absolute measure, 236.
LeConte (Prof. J.) on some pheno-
mena of binocular vision, 131.
L'Hote (M.) on the generation of
ozone in oxygen and in air under
the influence of the electric spark,
79.

Lielegg (Prof. A.) on the spectra of
the flames of gases containing car-
bon, 208.

Light, on the measurement of the
luminous intensity of, 227
; on the
absorption of, by the air, 293; on
the polarization of, by cloudy mat-
ter, 384.

Lightning-spectrum, on the, 142.
Lignite, analysis of, 265.
Liquid waves, on the interference of,
240.
Liquids, on some phenomena con-
nected with the boiling of, 161; on
the galvanic resistance of, 271; on
the thermal resistance of, 468.
Lissajous (M.) on the interference of
liquid waves, 240.

Lockyer (J. N.) on the spectrum of a
solar prominence, 43; on spectro-
scopic observations of the sun, 144.
Logarithmic waves, on two remark-
able resultants arising out of the
theory of rectifiable compound,
375.
Magnet, on a new form of permanent,
18.
Magnetism of chemical compounds,
on the, 314.

Magneto-electric current, on a pro-
perty of the, 54.
Marcet (Dr. W.) on the falsetto or
head-sounds of the human voice,
289.

Marignac (Prof. C.) on the latent
heat of volatilization of sal-ammo-
niac, 318.

Metals, on a new method of estima-

ting minute traces of, 80.
Meteorites, on the luminous, thermal,
and acoustic phenomena attending
the fall of, 246.

Meyer (Dr. E.) on the heating of a
disk rotating in a vacuum, 26, 97,
287.

Mills (Dr. E. J.) on statical and dy-
namical ideas in chemistry, 461.
Mineralogy of Nova Scotia, contribu-
tions to the, 264; researches in
British, 321.

Mirage in the English Channel, on a,
400.

Moon, on Hansen's theory of the
physical constitution of the, 32.
Moon (R.) on the theory of sound,
189.

Moseley (Canon) on the mechanical

impossibility of the descent of gla-
ciers by their weight only, 229,363;
on the uniform motion of an im-
perfect fluid, 370.

Motion, lecture experiments to illus-
trate the laws of, 332.
Newcomb (S.) on Hansen's theory of
the physical constitution of the
moon, 32.

Nitrogen, on the coloration of per-
oxide of, 312; on the spectra of,

422.

Norton (Prof. W. A.) on the funda-
mental principles of molecular phy-
sics, 98.

Olefiant gas, on the spectrum of,
212.

Optometers, on shadow-, 340.
Organic bodies, on the action of de-
hydrating agents on, 20.
Oxalic ethers, on the action of chlo-
ride of zinc on the, 25.
Oxygen, on the spectra of, 417.
Ozone, on the generation of, in oxy-
gen and in air under the influence
of the condensed electrical spark,
79.
Paalzow (Dr.) on the galvanic resist-
ance of liquids, 271.

Paget (F. A.) on a new form of per-
manent magnet, 18.
Palladium, on the relation of hydro-
gen to, 122; on the voltaic deport-
ment of, 474.

Parnell (J.) on a mirage in the En-
glish Channel, 400.

Patry (E.) on the electrical polarity
and inequality of the amalgamated
zinc electrodes in sulphate of zinc,
475.
Peacock (R. A.) on geological time,
and the probable date of the gla-
cial period, 206.
Photometer, description of a new, 293.
Physics, on the fundamental princi-
ples of molecular, 98, 182, 275,348,
431.
Poggendorff (Prof.) on the voltaic
deportment of palladium, 474.
Poppe (A.) on the shape of the flame
of a Bunsen's burner, 160.
Precipitates, on the washing of, 1.
Pyridine, on the artificial production
of, 20.

Royal Institution, proceedings of the,
395.

Royal Society, proceedings of the, 65,
141, 227, 306, 384, 468.

Rupert's drops, on a development of
heat which accompanies the burst-
ing of, 478.
St.-Edme (M.) on the generation of
ozone in oxygen and in air under
the influence of the electric spark,
79.
Sal-ammoniac, on the latent heat of
volatilization of, 318.

Salet (M.) on the coloration of per-
oxide of nitrogen, 312.

Sea, on extraordinary agitations of
the, not produced by winds or tides,
35.

Silicoborocalcite, on a new locality
for, 270.

Sky, on the blue colour of the, 384.
Smith (M. H.) on the action of de-
hydrating agents on organic bodies,
20.

Soret (L.) on the colour of the Lake
of Geneva, 345.

Sound, on the theory of, 189.
Spectra of the flames of gases contain-
ing carbon, on the, 208.
Spectrum, on the formation of an ar-
tificial, with one Fraunhofer's line,
235.

Spectrum observations of comets, on
some, 456.

Stewart (B.) on certain experiments
on aneroid barometers, 65; on the
heating of a disk by rapid rotation
in vacuo, 97.

Sun, spectroscopic observations of the,
144.

Swan (Prof. W.) on a metallic con-
nector to replace the vulcanite tube
used with Bianchi's air-pump, 442.
Sylvester (J.-J.) on an equation in
differences of the second order, 225.
on a new continued fraction appli-
cable to the quadrature of the circle,
373; on two remarkable resultants
arising out of the theory of rectifi-
able compound logarithmic waves,
375.

Tait (Prof. P. G.) on the heating of

a disk by rapid rotation in vacuo, 97.
Tidal action, on the secular effects of,
216.

Tomlinson (C.) on some phenomena
connected with the boiling of li-
quids, 161.

Turgite, analysis of, 268.
Tyndall (J.) on cometary theory, 241;

on the blue colour of the sky,
the polarization of skylight, and on
the polarization of light by cloudy
matter, 384.

Vapours, on the dispersive power of,
75.

Vaughan (D.) on the secular effects
of tidal action, 216.

Vicaire (E.) on the temperature of
flames and dissociation, 156.
Vision, binocular, on some pheno-
mena of, 131.

Voice, on the falsetto or head-sounds
of the human, 289.
Wanklyn (Prof. J.) on a new method
of estimating minute traces of me-
tals, 80; on ethylate of sodium and
ethylate of potassium, 117; on the
compounds of ethylene-sodium and
of its homologues, 175; on some
reactions of hydrated oxide of ethy-
lene-sodium, 358.

Water, on the blue colour of, 345.
White-lead corrosions, on the cause
of a pink colour in, 344.
Wiedemann (Prof.) on the magnetism
of chemical compounds, 314.
Wild (H.) on the absorption of light
by the air, 293.

Wilde (H.) on a property of the mag-
neto-electric current, 54.

Wright (R. J.) on a method of mea-
suring the intensity of total day-
light, 74.

Wüllner (A.) on the formation of an
artificial spectrum with one Fraun-
hofer's line, 235; on the spectra of
certain gases in Geissler's tubes,
405.

ALERE

FLAMMAM.