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PROCEEDINGS

OF THB

ROYAL SOCIETY OF LONDON.

From March 3, 1892, to May 19, 1892.

VOL. LI.

LONDON:
HARRISON AND SONS, ST. MARTIN'S LANE,

Printers in Ordinary to Her Majesty.

Sm MDCCCXCII.

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CONTENTS.

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Au Improved Apparatus for ascertaining the Sensitiveness of Safety

lamps when used for Gas-testing. By Frank Clowes, D.Sc. (Lond.),

Professor of Chemistry, University College, Nottingham ................... On the Application of a Hydrogen Flame in an ordinary Safety-lamp

to the Detection and Measurement of Fire-damp. By Frank Clowes, D.Sc. (Lond.), Professor of Chemistry, University College, Nottingham ..........

................. On the Application of the Safety-lamp to the Detection of Benzoline

Vapour and other Inflammable Vapours in the Air. By Frank
Clowes D.Sc. (Lond.), Professor of Chemistry, University College,
Nottingham .........

........................ Aberration Problems : a Discussion concerning the Connexion between

Ether and Matter, and the Motion of the Ether near the Earth.
By Oliver Lodge, F.R.S., Professor of Physics, University College,

Liverpool ........
The Abductor and Adductor Fibres of the Recurrent Laryngeal Nerve.

By J. S. Risien Russell, M.B., M.R.C.P. (From the Pathological

Laboratory of University College, London) .......................................... Interference with Icterus in Occluded Ductus Choledochus. By

Vaughan Harley, M.D. (From the Physiological Institute, Leipzig) On the Composition of Hämocyanin. By A. B. Griffiths, Ph.D., F.R.S. (Edin.), F.C.S., &c. ...................

............ List of Presents ................

.....

102

113

116

116

No. 309.

The Nature of the Shoulder Girdle and Clavicular Arch in Sauro

pterygia. By H. G. Seeley, F.R.S., Professor of Geography, King's

College, London ..........
Report of the Kew Committee......

.............

119 152

No. 310.
First Report to the Water Research Committee of the Royal Society,

on the present State of our Knowledge concerning the Bacteriology
of Water, with especial reference to the Vitality of Pathogenic
Schizomycetes in Water. By Percy F. Frankland, Ph.D., B.Sc.
(Lond.), F.R.S., Professor of Chemistry in University College, Dundee,
and Marshall Ward, Sc.D., F.R.S., F.L.S., Professor of Botany in the
Royal Indian Engineering College, Coopers Hill....... ..............

183

No. 311.
Report of the Committee on Colour-Vision. [Plate 2] .............

Evidence taken by the Committee
Letters received by the Committee bearing on the Enquiry............
Appendices. [Plate 3) ............

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Page On a decisive Test-case disproving the Maxwell-Boltzmann Doctrine

regarding Distribution of Kinetic Energy By Lord Kelvin, Pres. R.S. .................... ...................................

......... 397 Researches on Turacin, an Animal Pigment containing Copper: Part II.

By A. H. Church, M.A., F.R.S., Professor of Chemistry in the Royal
Academy of Arts, London .......................................

399 On the Mathematical Theory of Electro-magnetism. By Alex. McAulay,

M.A., Ormond College, Melbourne Stellar Photometry. By W. J. Dibdin, F.I.C., F.C.S., &c........... 404 On some Phenomena connected with Cloudy Condensation. By John Aitken, F.R.S...

408 List of Presents... .......

439

.............

........ 400

..............

No. 313.- May 5, 1892. List of Candidates recommended for Election ....

443 Transmission of Sunlight through the Earth's Atmosphere. Part II.

Scattering at different Altitudes. By Captain W. de W. Abney, C.B.,
D.C.L., F.R.S. .........

...................... 444 On the Simultaneity of Magnetic Variations at different places on occa

sions of Magnetic Disturbance, and on the relation between Magnetic and Earth Current Phenomena. By William Ellis, F.R.A.S., Superintendent of the Magnetical and Meteorological Department, Royal Observatory, Greenwich ..............

................... 445 On the Liquation of Metals of the Platinum Group. By Edward

Matthey, F.C.S., F.S.A., Ass. Roy. Sch. Mines .......
The Potential of an Anchor Ring. By F. W. Dyson, Fellow of Trinity

College, Cambridge ...........
On the Residues of Powers of Numbers for any Composite Modulus,

Real or Complex, By Geoffrey T. Bennett, B.A. ...
List of Presents .......

.................. 453

...... 447

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............... 463

May 12, 1892.
Transformers. By John Perry, D.Sc., F.R.S.
On the Probable Effect of the Limitation of the Number of Ordinary

Fellows elected into the Royal Society to Fifteen in each Year on
the eventual total Number of Fellows. By Lieut.-General R. Strachey,

R.E., F.R.S.
On the Shoulder Girdle in Ichthyosauria and Sauropterygia. By J. W.

Hulke, F.R.S.
On the Embryology of Angiopteris evecta, Hofm. By J. Bretland

Farmer, M.A., Fellow of Magdalen College, Oxford ...... ........ 471
Note on Excretion in Sponges. By George Bidder ... ................
List of Presents.

..............

....... 471

474

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