PROCEEDOGS 
OF THE 
ROYAL SOCIETY OF EDINBURGH. 
VOL. XX. 
SESSIONS 1 8 9 3-9 5. 
CONTENTS. 
PAGE 
Election of Office-Bearers, ...... 1 
Opening Address. By Sir Douglas Maclagan, President, . . 2 
On the Madder-Staining of Dentine. By W. G. Aitchison Robert- 
son, M.D., D.Sc., F.R.C.P.E., Physiological Laboratory, University 
of Edinburgh. (YVith a Plate), . . . .14 
On the Comparative Histology and Physiology of the Spleen. By 
Arthur J. Whiting, M.D. (Abstract), . , . .21 
Induction through Air and Water at Great Distances without the Use 
of Parallel Wires. By Charles A. Stevenson, B.Sc., F.R.S.E., 
M.Inst. C.E. (With a Plate), ..... 25 
On a New Apparatus for Counting Bacterial Colonies in Roll-Cultures. 
By J. Buchanan Young, M.B., B.Sc., Public Health Laboratory, 
University of Edinburgh. Communicated hy Sir Douglas Mac- 
lagan. (With a Plate), 28 
Abstract of Paper on the “ Digestion of Sugars.” By W. G. Aitchison 
Robertson, M.D., D.Sc., F.R.C.P.E., . . . .30 
On Properties of the Parabola. By Professor Anglin, . . .35 
Preliminary Note on Observations of the Minor Planet Victoria in 
1889. By Dr D, Gill, H.M. Astronomer at the Cape of Good 
Hope, ......... 47 
On the Early History of some Scottish Mammals and Birds. By 
Professor Duns, D.D., . . . . . .50 
On a Remarkable Glacier-Lake, formed by a Branch of the Hardanger- 
Jokul, near Eidfiord, Norway. By Robert Munro, M.D., M.A. 
(With a Plate), ....... 53 
On the Compressibility of Licjuids in connection with their Molecular 
Pressure. By Professor Tait, . . . . .63 
