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PROCEEDINGS
OF THE
ROYAL SOCIETY OF LONDON.
From December 11, 1890, to May 28, 1891.
VOL. XLIX.
LONDON:
HARRISON AND SONS, ST. MARTIN'S LANE,
Printers in Ordinary to Her Majesty.
HARRISON AND SONS, PRINTERS IN ORDINARY TO HER MAJESTY,
ST. MARTIN'S LANE.
CONTENTS.
-
No. 296.—December 11, 1890.
On Ellipsoidal Harmonics. By W. D. Niven, F.R.S.
Photometric Observations of the Sun and Sky. By William Brennand......
Determinations of the Heat Capacity and Heat of Fusion of some Sub-
stances to test the Validity of Person's Absolute Zero. By Spencer
Umfreville Pickering, M.A., F.R.S.
On Wolf and Rayet's Bright-Line Stars in Cygnus. By William Hug-
gins, D.C.L., LL.D., F.R.S., and Mrs. Huggins
On Stokes's Current Function. By R. A. Sampson, Fellow of St. John's
College, Cambridge
List of Presents.....................
December 18, 1890.
On a Determination of the Boiling Point of Sulphur, and on a Method of
Standardising Platinum Resistance Thermometers by reference to it.
By Hugh L. Callendar, M.A., Fellow of Trinity College, Cambridge,
and E. H. Griffiths, M.A., of Sidney Sussex College, Cambridge
On the Generic Identity of Seeparnodon and Phascolonus. By R. Lydekker, B.A. (Plate 1)
Contribution to the Study of the Vertebrate Liver. By Sheridan Délé-
pine, M.B., Edin
On certain Conditions that modify the Virulence of the Bacillus of
Tubercle. By Arthur Ransome, M.D., F.R.S.
List of Presents..........
No. 297.-January 8, 1891.
On the Minute Structure of the Muscle-Columns or Sarcostyles which
form the Wing Muscles of Insects. Preliminary Note. By E. A.
Schäfer, F.R.S.
On the Minute Structure of Striped Muscle, with Special Reference to a
New Method of Investigation by means of "Impressions" stamped in
Collodion. By John Berry Haycraft, M.D., D.Sc., F.R.S.E.
On the Reflection and Refraction of Light at the Surface of a Magnetised
Medium. By A. B. Basset, M.A., F.R.S.
Further Contributions to the Metallurgy of Bismuth. By Edward
Matthey, F.S.A., F.C.S., Assoc. Roy. Sch. Mines
List of Presents.........
8888