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THE

LONDON, EDINBURGH, AND DUBLIN

PHILOSOPHICAL MAGAZINE

AND

JOURNAL OF SCIENCE.

CONDUCTED BY

SIR ROBERT KANE, LL.D. F.R.S. M.R.I.A. F.C.S.
AUGUSTUS MATTHIESSEN, PH.D. F.R.S. F.C.S.

AND

WILLIAM FRANCIS, PH.D. F.L.S. F.R.A.S. F.C.S.

ERAL LIBRARY

University o MICHIGAN

"Nec aranearum sane textus ideo melior quia ex se fila gignunt, nec noster vilior quia ex alienis libamus ut apes." Just. LIPS. Polit. lib. i. cap. 1. Not.

VOL. XXXVII.-FOURTH SERIES.

JANUARY-JUNE 1869.

LONDON.

TAYLOR AND FRANCIS, RED LION COURT, FLEET STREET,
Printers and Publishers to the University of London;

SOLD BY LONGMANS, GREEN, READER, AND DYER; SIMPKIN, MARSHALL AND CO.;
WHITTAKER AND CO.; AND KENT AND CO., LONDON:-BY ADAM AND
CHARLES BLACK, AND THOMAS CLARK, EDINBURGH;

SMITH AND SON, GLASGOW; HODGES AND

SMITH, DUBLIN; AND PUTNAM,

NEW YORK.

"Meditationis est perscrutari occulta; contemplationis est admirari perspicua . . . . . Admiratio generat quæstionem, quæstio investigationem, investigatio inventionem."-Hugo de S. Victore.

-"Cur spirent venti, cur terra dehiscat,

Cur mare turgescat, pelago cur tantus amaror,
Cur caput obscura Phoebus ferrugine condat,
Quid toties diros cogat flagrare cometas;
Quid pariat nubes, veniant cur fulmina cœlo,
Quo micet igne Iris, superos quis conciat orbes
Tam vario motu."

J. B. Pinelli ad Mazonium.

CONTENTS OF VOL. XXXVII.

(FOURTH SERIES.)

NUMBER CCXLVI.-JANUARY 1869.

Prof. R. Bunsen on the Washing of Precipitates. (With a Plate.)

Mr. F. A. Paget on a New Form of Permanent Magnet...

Messrs. E. T. Chapman and M. H. Smith on the Action of De-

hydrating Agents on Organic Bodies

M. O. E. Meyer on the Explanation of Stewart and Tait's Ex-

periments on the Heating of a Disk rotating in a Vacuum ..

Mr. S. Newcomb on Hansen's Theory of the Physical Consti-

tution of the Moon

Page

Mr. R. Edmonds on Extraordinary Agitations of the Sea not

produced by Winds or Tides ..

Prof. E. Edlund's Experimental Proof that the Electric Spark is

an Electromotor..

Mr. H. Wilde on a Property of the Magneto-electric Current to

control and render Synchronous the Rotations of the Arma-

tures of a number of Electromagnetic Induction Machines ..

Notices respecting New Books :-

Mr. G. Fownes's Manual of Elementary Chemistry, The-

oretical and Practical

Dr. F. Guthrie's Elements of Heat and of Non-metallic

Chemistry. Especially designed for Candidates for the

Matriculation Pass Examination of the University of

Proceedings of the Royal Society :-

Mr. B. Stewart's Account of certain Experiments on Ane-

roid Barometers, made at Kew Observatory..

Mr. R. J. Wright on an Easy Method of measuring ap-

proximately the Intensity of Total Daylight

On the Dispersive Power of Gases and Vapours, by M. Croul-

On the Generation of Ozone in Oxygen and in Air under the

influence of the condensed Electrical Spark, by MM. L'Hote

On a New Method of Estimating minute traces of Metals, spe-

cially designed for Water-analysis, by J. Alfred Wanklyn

and Ernest Theophron Chapman

NUMBER CCXLVII.-FEBRUARY.

M. Dumas's Remarks on Affinity..

Messrs. B. Stewart and P. G. Tait on the Heating of a Disk

by rapid rotation in vacuo

Prof. W. A. Norton on the Fundamental Principles of Molecular

M. H. St.-Claire Deville on the Temperature of Flames, and its

relations with the Pressure

Prof. J. A. Wanklyn on Ethylate of Sodium and Ethylate of Po-

tassium. Part. I. ..

Mr. T. Graham on the Relation of Hydrogen to Palladium

Prof. J. LeConte on some Phenomena of Binocular Vision ..

Notices respecting New Books:-Mr. J. N. Lockyer's Elemen-

tary Lessons in Astronomy

Proceedings of the Royal Society :-

Lieut. J. Herschel on the Lightning Spectrum

Mr..J. N. Lockyer on the Spectrum of a Solar Prominence;

and Spectroscopic Observations of the Sun ...... 143, 144

Proceedings of the Geological Society :-

Dr. J. Schmidt on the Eruption of the Kaimeni of Santorin. 145

Mr. J. Prestwich on the Structure of the Crag-beds of Nor-

folk and Suffolk..

Mr. J. Thomson on some Genera of Carboniferous Corals. 148

Mr. S. V. Wood, Jun., on the Pebble-beds of Middlesex,

Essex, and Herts

Mr. W. Topley on the Cretaceous Rocks of the Bas-Bou-

Mr. C. H. Weston on the Mendip Anticlinal

Mr. R. B. Foote on the Distribution of Stone Implements

in Southern India ...

Mr. G. V. Du Noyer on worked Flint Flakes from Carrick-

fergus and Larne

Mr. A. Murray on the Diminution in the Volume of the

Sea during past Geological Epochs ..

Messrs. A. L. Adams and G. Busk: Has the Asiatic Ele-

phant been found in a Fossil State

Sir Philip de M. Grey Egerton on the Characters of some

new fossil Fish from the Lias of Lyme Regis

Capt. T. Baker on the Geology of Port Santa Cruz

Dr. F. Stoliczka on the Jurassic Deposits in the N.W.

Mr. J. W. Salter on a true Coal-plant from Sinai

Messrs. J. W. Salter and H. Hicks on some Fossils from

the Menevian Group

Mr. H. F. Holt on Earthquakes in Northern Formosa

Mr. A. B. Mitford on the Coal-mines of Iwanai, Island of

Yesso, Japan....

Mr. W. B. Dawkins on a new Species of Fossil Deer from

Clacton, and from the Norwich Crag

Mr. T. Codrington on a section of the Strata from the Chalk

to the Bembridge Limestone at Whitecliff Bay..... 155

Dr. H. A. Nicholson on the Graptolites of the Coniston

Mr. G. W. Ormerod on the "Waterstone Beds ' of the

Mr. E. R. Lankester on the remains of Pteraspidian Fishes

in Devonshire and Cornwall

Captain James Clark on the Geological peculiarities of the

Saxon Switzerland ...

On the Temperature of Flames and Dissociation, by E. Vicaire. 156

On a Friction and Induction Electrical Machine, by F. Carré, 160

On the Shape of the Flame of a Bunsen's Burner, by A. Poppe. 160

NUMBER CCXLVIII.-MARCH.

Mr. C. Tomlinson's Historical Notes on some Phenomena con-

nected with the Boiling of Liquids

Prof. J. A. Wanklyn on the Compounds of Ethylene-sodium

and of its Homologues ...

Prof. J. Bayma on the Fundamental Principles of Molecular

Mr. R. Moon on the Theory of Sound....

Mr. J. Croll on the Physical Cause of the Motion of Glaciers. 201

Mr. R. A. Peacock on Mr. J. Croll's paper "On Geological

Time, and the probable Date of the Glacial and the Upper

Miocene Period"

Prof. A. Lielegg's Contributions to the Knowledge of the Spec-

tra of the Flames of Gases containing Carbon....

Mr. D. Vaughan on the Secular Effects of Tidal Action

Mr. J. J. Sylvester on the Story of an Equation in Differences

of the Second Order .............

Proceedings of the Royal Society :—

Mr. W. Crookes on the Measurement of the Luminous In-

tensity of Light .....

Canon Moseley on the Mechanical Possibility of the

Descent of Glaciers by their Weight only....

Formation of an Artificial Spectrum with one Fraunhofer's

Line, by A. Wüllner ....

On the Quantity of Electricity produced by the Electrophorus

Machine expressed in Absolute Measure, by F. Kohlrausch.. 236

On the Interference of Liquid Waves, by M. Lissajous

NUMBER CCXLIX.-APRIL.

Prof. J. Tyndall on Cometary Theory..

Chevalier W. von Haidinger's Remarks on the Luminous, Ther-

mal, and Acoustic Phenomena attending the Fall of Meteorites. 246

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