Notices of the Proceedings at the Meetings of the Members of the Royal Institution, with Abstracts of the Discourses

gravities of the wires. From this result, combined with that enunciated in 45, it follows that

48. The rapidity of vibration of different chords of the same length and thickness is inversely proportional to the square root of their densities.

49. It is, perhaps, worth remarking that, by means of a tuningfork, the specific gravities of all metals capable of being drawn into wires of sufficient fineness and tenacity may be determined.

The foregoing laws have been combined in various ways; and the deductions drawn from them, when subjected to the test of direct experiment, have, in every instance, been verified.

[J. T.]

GENERAL MONTHLY MEETING,

Monday, July 2, 1866.

SIR HENRY HOLLAND, Bart. M.D. D.C.L. F.R.S. President, in the Chair.

HIS ROYAL HIGHNESS THE DUKE OF EDINBURGH, K.G. was elected an Honorary Member of the Royal Institution.

Richard Cockerton, Esq.

was elected a Member of the Royal Institution.

The PRESENTS received since the last Meeting were laid on the table, and the thanks of the Members returned for the same, viz. :—

FROM

Her Majesty's Government (through Sir R. I. Murchison).—Memoirs of the Geolo-
gical Survey of Great Britain. Vol. III. 8vo. 1866.
Governor-General of India-Geological Survey of India.
Memoirs: Vol. IV. Part 3. Vol. V. Part 1. 8vo. 1865.
Catalogue of Echinodermata, &c. 8vo. 1865.

Palæontologica Indica, III. 6-9; IV. 1. 4to. 1864-5.

Annual Report. 8vo. 1864-5.

Trustees of the British Museum-Cuniform Inscriptions of Asia. Vol. II. fol. 1866. Committee on Meteorological Department of the Board of Trade-Report. fol. 1866. Commissioners in Lunacy-Twentieth Report. 8vo. 1866.

Astronomical Society, Royal-Monthly Notices, 1865-6. No. 7. 8vo.

Bavarian Academy of Science, Royal-Sitzungsberichte, 1866. Band I. 1, 2. 8vo. Chemical Society-Journal for June, 1866. 8vo.

Corporation of London-Catalogue of the Library. Sixth Supplement. 8vo. 1866.

Editors-Artizan for June, 1866. 4to.

Athenæum for June, 1866. 4to.

British Journal of Photography for June, 1866. 4to.
Chemical News for June, 1866. 4to.

Engineer for June, 1866. fol.

Horological Journal for June, 1866. 8vo.

Journal of Gas-Lighting for June, 1866. 4to.

Mechanics' Magazine for June, 1866. 8vo.

Pharmaceutical Journal for June, 1866.

Practical Mechanics' Journal for June, 1866. 4to.

Faraday, Professor, D.C.L. F.R.S.-Kais. Akademie der Wissenschaften: Wien. Math Nat. Classe :-Denkschriften, Band 23, 24. 4to. 1864-5.

Sitzungsberichte. Abth. I. 1865. Nos. 3-7. 8vo. Abth. II. 1865. Nos. 3-8. and Register. 8vo.

Almanach, 1864 and 1865.

H. A. and R. de Schlagintweit-Results of a Scientific Mission to India and High Asia. Vols. I. II. III. IV. and Atlas 1, 2, 3, 4. 4to.

E. Schlagintweit-Buddhism in Tibet. 8vo, with Atlas. 1863.

Atlas der Hautkrankheiten, Lief. 4, 5. 1864-5.

Franklin Institute-Journal, Nos. 484, 485. 8vo. 1866.

1861-6.

Gilbert, James, Esq. (Executors)-Works of James William Gilbert, F.R.S.— 6 vols. 8vo. 1865.

Linnean Society-Journal and Proceedings, Zoology, No. 37. 8vo. 1866.
Meteorological Society-Proceedings, No. 25. 8vo. 1866.

Murchison, Sir Roderick I. Bart. K.C.B. (the Author)—Address to Royal Geographical Society, 28th May, 1866. 8vo.

Oakes, Lieut.-Col. W. H. (the Author)-Machine-Table for determining Primes and the least Factors of Composite Numbers up to 100,000. (In sheets.) Photographic Society-Journal, No. 170. 8vo. 1866.

Royal Society of London-Proceedings, No. 84.

8vo. 1866.

San-German de Leandro (the Author)-Ensayo para utilizar como Fuerza motriz el Calor Solar y la Presion admosferica. (K 94) 8vo. 1866.

United Service Institution, Royal-Journal, No. 38. 8vo. 1866.

Catalogue of the Library. 8vo. 1865.

Vereins zur Beförderung des Gewerbsfleisses in Preussen-Verhandlungen, Jan, und Feb. 1866. 4to.

INDEX TO VOLUMES I. II. III. & IV.

ABEL, F. A., on the Application of
Science to Military Purposes, II. 283;
III. 243.

on Explosions and their Military
Applications, III. 438.

on the Chemical History and Ap-
plication of Gun-cotton, IV. 245.

on Proposed Substitutes for Gun-
powder, Iv. 616.

Absorption of Heat, IV. 487, 489.
Acetylene, IV. 18.

Acids and Salts, I. 234.
Acoustic Experiments, II. 441.
Actonian Prize (1851), awarded to Mr.
Wharton Jones, 1. 54; (1858), Sub-
ject announced, II. 1; No Award, 526;
(1865), awarded to G. Warington, IV.
399.
Aeby, on Nervous Contraction, Iv. 589.
Aggregation, Material, 1. 254; its re-
lation to Radiation, IV. 487.
Agrarian Laws of Lycurgus, IV. 268.
Air, Estimation of Organic Matter in, III.
89; see Atmosphere.

Airy, G. B., on the Total Eclipse of 1851,
I. 62.

on the Eclipse of Thales, &c.,

I. 243.

on Pendulum Experiments at
Harton, I. 17.

Albert, Prince Consort, Present from,
III. 163; Address respecting his De-
cease, IV. 404, 418.

Albert Nyanza Lake discovered, Iv. 503.
Alison, S. S., on certain Auditory Phe-
nomena, III. 63.

Allen, Ralph, improves Postal System,
III. 459.

Allotropic Changes, I. 133, 201.

Alps, Geology of, 1. 31; of Savoy, IV.

142.

Aluminium, Specimens exhibited, II. 79,
85; Rev. J. Barlow on, 215.
Aluminium-Ethide and Methide, IV.

343.

America, North, Physical Geography,
II. 167, 522.

Ammonia, a chemical type, I. 274.
Analytically formed Substances by the
Body, IV. 568.

Anderson, Charles, Decease of, Iv. 516.

Andes, Minerals of, II. 190.
Anhydrous Organic Acids, 1. 239.
Aniline, History of, III., 475; IV. 437.
Anima Mundi, iv. 512.

Animal Individuality, 1. 184; Forms,
444.

and Vegetable Kingdoms, Limits,
1. 415; Structure, 298.

- Life, Persistent Types of, m. 151;
in the Deep Sea, 299.

Quinoidine, Iv. 567.

Animals, Earliest Stages of their De-
velopment, II. 315.

Annual Meetings (1851) 1. 61; (1852)

190; (1853) 309; (1854) 433; (1855)
II. 98; (1856) 254; (1857) 421;
(1858) 524; (1859) ш. 132; (1860)
252; (1861) 361; (1862) 484; (1863)
IV. 97; (1864) 282; (1865) 433;
(1866), 615.

Ansted, D. T., on Mud Volcanoes and
Petroleum, IV. 628.
Antiquity of Man, Iv. 38.
Antozone, III. 70.

Apes, Anthropoid, п. 26; m. 16.
Aphis, Development of, 1. 11, 14; 1. 535.
Appert's Mode of Preserving Food, II.
77.

Aquarium, II. 403.

Aqueous Vapour, condensed and frozen,
IV. 5; see Vapours.

Arabia, Eastern and Central, iv. 348.
Arabic Philosophy, IV. 506.
Architecture, its relations to Science,
IV. 124; Constructive Principles of
the Styles, 268.

Armstrong's Time-fuzes, III. 443.

Gun, its Construction, III. 246;
its Powers, 500.

Art and Science, points of contact
between, IV. 9.

illustrated by Coins, Iv. 306.
Education, IV. 380.

Artificial Illumination, Iv. 16.

Ashby, Rev. J. E., on Catalytic Action,
II. 66.

Assyrian and Babylonian Excavations,
II. 143.

Astronomy and Photography, I. 462.
Atlantic Telegraph, II. 401.

Atlantis, on the Theory of an, ш. 431.

Atmospheric Electricity, II. 277.
Atmosphere, Radiation through, Iv. 4;
its Opalescence, 651.

Atomicities of the Elements, IV. 275.
Atoms, their combining power, Iv. 401.
Auditory Phenomena, m. 63.
Aurora Boreales, 1. 275; I. 9.
Austen, R. Godwin, on Coal in South
of England, I. 511.
Averroes' Philosophy, Iv. 510.
Avicenna's Philosophy, IV. 507.

BABYLON and Nineveh, on Discoveries

at, 1. 84, 143; III. 536; IV. 335.
Baily on Eclipse of Thales, I. 244;
Baily's Beads, 64.

Bain's Printing Telegraph, 1. 353.
Baker, S. W., on the Sources of the
Nile, Iv. 492.

Baldry Property purchased, rv. 291.
Balloon Ascent, п. 437.

385.

Scientific Experiments, IV. 65,

Bank Notes, Manufacture of, II. 263.
Barlow, Rev. J., on Silica, 1. 422.

-on Application of Chemistry to
the Preservation of Food, I. 72.

on Aluminium, п. 215.

on Woody Fibre and Parchment
Paper, II. 409.

on Mineral Candles, &c., manu-
factured at Belmont and Sherwood,
II. 506.

his Portrait painted and presented
by H. W. Pickersgill, m. 1.

resigns the Secretaryship, m. 291;
Resolution of General Meeting
thereon, 313; Letter from, 329.
Barometer, Cartesian, I. 426.

Barrett, W. F., engaged as Assistant in
the Laboratory, Iv. 156.

Bazley, T., Plea for Cotton, I. 514.
Becquerel, E., Electrical Researches of,
I. 75, 338, 360.

on Phosphorescence, III. 160.
Bell, Great, of Westminster, u. 368.
Bell, Jacob, presents Gould's Works on
Birds, III. 154.

Bell, Messrs., present Seven Pounds of
Sodium, IV. 153.
Bells, List of, II. 384.
Belmontine, II. 507.
Bennet's Experiment on the Impact of
a Beam of Light, Iv. 560.
Benzol discovered by Faraday, ш. 482;
its relation to Mauve, 477.
Berthelot discovers Acetylene, Iv. 18.
Bezold, on Transmission by the Nerves,
IV. 585.

Bigsby, J. J., on Lake Superior, 1. 154.
Blackheath Pebble-bed, 1. 164.
Blackie, J. S., on the Spartan Consti-
tution and the Agrarian Laws of
Lycurgus, IV. 263.

Blakeley's Gun, m. 246.

Blind, Education of the, I. 290; Rules
for their Management, 297.
Boiling Water, Phenomena of, Iv. 158.
Bonelli's Electric Silk-Loom, ш. 272.
Botfield, B., Legacy from, IV. 326.
Boutigny, M., Etudes sur les corps à
l'état sphéroïdal, 1. 179.

Boussingault's Mode of procuring Oxy-
gen, I. 337.

Bowdich's Method of purifying Coal
Gas, IV. 17.

Bradbury, H.,on Nature-Printing, II. 106.
on Bank Notes, II. 263.
Present from, u. 147.

on Printing (no abstract), II. 534.
Brain of Man and Apes, III. 407.
Brande, W. T., on Peat, 1. 4.

on Electro-magnetic Clocks, 1. 109.
Address on resigning his Professor-
ship, 1. 168; Report of the Managers
respecting, 170; elected Hon. Pro-
fessor of Chemistry, 171.

Decease, IV. 550.

Branson, Dr. F., Nature-Printing, II.

112.

Bread-making, m. 253.

Brett, J. W., on Submarine Telegraph,
II. 394.

British Seas, Natural History of, 1. 17.
Brixham Hill Cavern, I. 149.
Brockedon, W., on Caoutchouc, 1. 42.

on Foreign Wines and the Fungus
on the Grape, 1. 303.
Brodie, B. C., on Allotropic Changes,
I. 201.

on Hydrogen and its Homologues,
I. 325.

on Melting Points, I. 449.
on Ozone, m. 71.

Bronze Age, Iv. 32.

Brooke, Č., on the Compound Achro-
matic Microscope, 1. 402.

Brookfield, W. H., on Oral Reading, IV.
241.

Broughton, J., engaged as Assistant in
Laboratory, Iv. 156.

Buckland, Frank, on the Culture of
Fish, IV. 75.

Buckle, H. T., on Influence of Women
on the Progress of Knowledge, II. 504.
Buddhism in India, Iv. 136.
Bunsen and Kirchhoff's Spectrum Ob-
servations, III, 393, 396.

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Notices of the Proceedings at the Meetings of the Members of ..., Volumes 1-4