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Professor BooLE on the Theory of Astronomical Observations, and on some
related Questions
on certain Additions to the Integral Calculus .....
Professor CURTIS on a System of Geodetics and the Conjugate System, traced
on the two Sheets of a Surface of Centres, with special reference to the Case
in which the Surface of Centres consists of an Ellipsoid and a Confocal
Hyperboloid
Rev. CHARLES GRAVES on the Interpretation of certain Symbolic Formulæ and
Extensions of Taylor's Theorem
.......
Sir W. R. HAMILTON on some Application of Quaternions to Cones of the
Third Degree
Mr. Commissioner HARGRAVE on Infinite Angles and on the Principle of Mean
Values
22
3
..................................
.........
Mr. JOHN POPE HENNESSY on the Origin and Elimination of Euclid's "Re-
ductio ad absurdum".
......
Rev. Professor JELLETT on some General Propositions connected with the
Theory of Attractions
Mr. T. MARTIN on certain Properties of the Radii of Curvature of Curves and
Surfaces, and their Application to the Method of Polar Reciprocation.........
Mr. B. A. MURRAY'S Demonstration that the Three Angles of every Triangle
are equal to Two Right Angles.........
Rev. G. SALMON on the Surface of Centres of an Ellipsoid
LIGHT, OPTICAL Instruments.
Sir DAVID BREWSTER on the Centring of the Lenses of the Compound Object- Glasses of Microscopes
.....
M. LÉON FOUCAULT on a new Polarizer, resulting from a Modification of the
Prism of Nicol
on a Telescope Speculum of Silvered Glass .....
Dr. J. H. GLADSTONE on the Colour of Salts in Solution, each Constituent of
which is coloured
on the Effects of Heat on the Colour of Dissolved Salts
Mr. THOMAS GRUBB on Improvements in the Optical Details of Reflecting
Telescopes and Equatoreal Instruments
M. L'ABBÉ MOIGNO on a Method of determining whether the Luminiferous
Vibrations are Parallel or Perpendicular to the Plane of Polarization
ELECTRICITY, Magnetism.
...
Page
Captain BLAKELY's Mathematical Investigation of the Proportion between the
Length required for an Electric Telegraph Cable and its Specific Gravity 11
Rev. Professor CALLAN on the Electro-dynamic Induction Machine ........ 11
Mr. JOHN HARTNUP on Controlling the Movements of ordinary Clocks by
Galvanic Currents ......
13
Major-General SABINE on the Amount and Frequency of the Magnetic Dis-
turbances and of the Aurora at Point Barrow, on the Shores of the Polar Sea 14
Professor W. B. ROGERS's Brief Account of the Construction and Effects of a
very powerful Induction Apparatus, devised by Mr. E. S. Ritchie, of Boston,
United States.....
...............
M. LOUIS SORET's Researches on the Correlation of Dynamic Electricity and
the other Physical Forces ......
15
16
Mr. G. JOHNSTONE STONEY'S Description of an Arrangement of Grove's
Battery
Professor W. THOMSON on Mr. Whitehouse's Relay and Induction Coils in
action on Short Circuit...............
Telegraph
21
on the Effects of Induction in long Submarine Lines of
Mr. J. DRUMMOND's Outline of a Theory of the Structure and Magnetic Phe-
nomena of the Globe.....
Mr. W. RUNDELL's Magnetic Experiments made on board the Great Eastern'
Steamer. (Communicated by Admiral FITZROY.)...............
SOUND.
Mr. M. DONOVAN on a singular Acoustic Phenomenon
Professor G. G. STOKES on the Effect of Wind on the Intensity of Sound
ASTRONOMY.
2222
Cavaliere O. F. MosOTTI on the Distribution of the Orbits of the Comets in
Space
.......... 23
Mr. M. Donovan on a Moveable Horizontal Sun-dial, which shows correct
Solar Time within a Fraction of a Minute ......
Mr. C. THOMSON's Tables to simplify and render more general the Method of
finding the Time, by observing Circumpolar Stars in the same Vertical. (Com-
municated by Sir W. R. HAMILTON.)
24
Professor HENNESSY on the Direction of Gravity at the Earth's Surface......... 24
on the Solidification of Fluids by Pressure................................................
Professor Loomis on the relative Accuracy of the different Methods of deter-
mining Geographical Longitude.....
25
26
Mr. J. J. MURPHY on a Proposal for the Establishment of a Uniform Reckon-
ing of Time in connexion with the Telegraph ....
Mr. J. NASMYTH on some Phenomena in connexion with Molten Substances... 26
Rev. W. G. PENNY on certain Planetary Perturbations
Rev. T. R. ROBINSON on Transit Observations of the Moon Professor P. SMYTH on Lunar Physics........
METEOROLOGY.
Notice of Meteorological Observations made at Sea. (Communicated by Rear-
Admiral FITZROY.)
Mr. C. FULBROOK on the Variation in the Quantity of Rain due to the Moon's
Position in reference to the Plane of the Earth's Orbit ....
Professor HENNESSY on Simultaneous Isothermal Lines
27
28
29
....
........
on the Distribution of Heat over the Surface of the British
Dr. LEE on the Discovery of the Asteroid, No. 46, on the 17th of August, 1857,
by Mr. Pogson, at Oxford...........
Rear-Admiral SMYTH on the Results of Measurements of y Virginis for the
Epoch 1857. (Communicated by Dr. LEE.)
Professor LOOMIS on certain Electrical Phenomena in the United States
Mr. J. J. MURPHY's Account of an instance of Converging Rays seen at Green-
island, on the Antrim Shore of Belfast Lough, August 13, 1857
31
............
32
35
M. L'ABBÉ RAILLARD'S Examination of some Problems of Meteorology. New
and complete Explanation of the Rainbow
37
Rev. T. RANKIN on Meteorological Phenomena at Huggate, Yorkshire
Mr. JOHN SIMPSON on the Temperature of the Air registered at the 'Plover's'
Winter-quarters at Point Barrow, in the years 1852, 1853, 1854............... 37
Mr. JAMES THOMSON on the Grand Currents of Atmospheric Circulation
on the Plasticity of Ice ......
Mr. D. VAUGHAN on Secular Variations in Lunar and Terrestrial Motion from
the influence of Tidal Action.........
38
39
40
on the Heat of Combination of Acids and Bases......... 44
Professor JAMES APJOHN on the Amount of Nitrogen in the Algæ
44
——— on some Compounds of Cyanogen
Mr. P. BUCHAN on the Composition of the Iron Ores of the Leitrim Coal Field,
with some Remarks on the Advantages of that District for the Manufacture
of Iron
Mr. R. BARNES and Mr. W. ODLING on the Condition of Thames Water, as
affected by London Sewage
Dr. CHARLES A. CAMERON on Urea as a Direct Source of Nitrogen to Vege-
tation
Professor DAUBENY on a Method of Refining Sugar .........
45
on the Conversion of Paper into Parchment..................
Mr. M. DONOVAN on Hygrometers and Hygrometry, with a description of a
New Modification of the Condenser Hygrometer and Hygroscope
Mr. G. C. FOSTER'S Suggestions towards a more Systematic Nomenclature for
Organic Bodies
M. ALPHONSE GAGES on some Arseniates of Ammonia
47
on the Specific Gravity of Chloride of Nitrogen, with
some Remarks upon its Action on Alcohol .......
Dr. J. H. GLADSTONE'S Chemical Notes
Salts........
48
on the Decomposition by Heat of certain Ammoniacal
on the Use of the Prism in detecting Impurities......... 48
Mr. ARCHIBALD H. HAMILTON on Electrical Currents in the Earth's Surface.
Dr. A. A. HAYES on some Modified Results attending the Decomposition of
Bituminous Coals by Heat
M. le Baron HEURTELOUP on a New Method of administering Chloroform.
(Communicated by M. L'ABBÉ MOIGNO.)
Mr. R. L. JOHNSON on Illuminating Peat Gas
........ 50
51
.... 51
Messrs. LawES, GILBERT, and PUGH's Notice of Researches on the Assimila-
tion of Nitrogen by Plants...................
Mr. JOHN J. J. KYLE on the Chemical Composition of an ancient Iron Slag
found at Lochgoilhead, Argyleshire. (Communicated by Dr. STEVENSON
MACADAM.).......
Dr. LLOYD on the Purification of Large Towns by means of Dry Cloacæ ...
Professor J. W. MALLET on the Atomic Weight of Aluminium ....
Dr. MIALL on the Melting-points of Bodies ....
M. L'ABBÉ MOIGNO's Notices of Photography..
on Three New Electrotype Processes
Sir JAMES MURRAY on the Choice of Perennial rather than Annual Fertilizers 54
Dr. M'NAMARA on Coloured Confectionary
55
Mr. W. ODLING on the Effects of Alum in Panification
Mr. W. ODLING and Dr. A. DUPRÉ on the Presence of Copper in the Tissues of
Plants and Animals
Rev. J. B. READE on a New Method of forming Ammonio-Iodides of Metals... 55
Mr. E. RILEY on Fused Wrought Iron. (Communicated by Dr. ODLING.)
Mr. JASPER W. ROGERS on the Nutritive Properties of the Potato, when pro-
perly manipulated, as compared with Wheat, &c.
Carbonized Peat Moss
Professor W. B. ROGERS' Ozone Observations
Professor W. K. SULLIVAN on a Process for the Determination of the Nitrates
in Plants
on the Presence of several Acids of the Series
C" H" O' among the Products of the Distillation of Peat ....
Remarks on the Solubility of Salts at high tempe-
ratures, and on the action of Saline Solutions on Silicates under the influence
of Heat and Pressure.............
Professor VOELCKER on the Composition of Norwegian Apatite......
on the Methods of Analysing the Superphosphates
57
58
59
60
on the Proportion of Organic Phosphorus in Legumine... 60
Mr. W. SYKES WARD on the Preservation of Albuminized Collodion Plates... 61
Professor G. WILSON on the Processes for the Detection of Fluorine
61
Dr. T. Woods on the Time required by Compounds for Decomposition......... 61
GEOLOGY.
Mr. ROBERT GODWIN-AUSTEN'S Notice of the occurrence of a Boulder of Gra-
nite in the White Chalk of the South-east of England
Mr. W. H. BAILY on Carboniferous Limestone Fossils from the County of
Limerick, collected by the Geological Survey .....
62
on a New Fossil Fern from the Coal-Measures near Glin,
County Limerick
Mr. J. BIRMINGHAM on the Drift of West Galway and the Eastern parts of
Mayo.......
63
64
Dr. CLARKE on certain Alterations of Level on the Sea-coast of part of the
County of Waterford, and the cause thereof
Mr. F. J. Foor on the Geology of the Neighbourhood of Tralee............
Sir RICHARD GRIFFITH on the Relations of the Rocks at or below the base of
the Carboniferous Series of Ireland.........
65
66
Mr. G. F. HABERSHON'S Notes from the Barbary Coast, with Fossils. (Com-
municated by Dr. GLADSTONE.)
67
Professor HARKNESS on the Geology of Caldbeck Fells, and the Lower Sedi-
mentary Rocks of Cumberland
Rev. Professor HAUGHTON on a Model illustrative of Slaty Cleavage.....
on Fossil Stems allied to Stigmaria, recently obtained
from the Upper Beds of the Old Red Sandstone of Hook Point, County of
Wexford
69
Professor HENNESSY on the Existence of Forces capable of changing the Sea-
level during different Geological Epochs............
Mr. WILLIAM HOPKINS on the Conductivity of various Substances for Heat.
Mr. J. BEETE JUKES and Mr. G. V. DU NOYER on the Geological Structure of
the Dingle Promontory, Co. Kerry
Notes on the Old Red Sandstone of South Wales.........
Messrs. JUKES and DU NOYER on the Geology of Lambay Island
Mr. G, H. KINAHAN on the Valentia Trap-District .....
Professor J, R, KINAHAN on the Zoological Relations of the Cambrian Rocks
of Bray Head and Howth .....
Professor KING on the Relation between the Cleavage of Minerals and the
Cleavage of Rocks
Mr. J. O. KELLY on a Section across Slieve-na-Muck, Co. Tipperary............ 76
Professor L. DE KONINCK and Mr. EDWARD WOOD on the genus Woodocrinus 76
Professor CAR. G. MENEGHINI'S Notice of the recent Advances of Palæontolo-
gical Discovery in Tuscany
Sir RODERICK I, MURCHISON on the Quartz Rocks, Crystalline Limestones,
and Micaceous Schists of the North-western Highlands of Scotland, proved
to be of Lower Silurian Age, through the recent Fossil discoveries of
Mr. C. Peach
79
82