PROCEEDINGS 
OF THE 
ROYAL SOCIETY OF EDINBURGH. 
Vol. XXIY. 
SESSIONS 1901-2—1902-3. 
CONTENTS. 
TAGR 
Election of Office-Bearers, Session 1901-2, .... 1 
Chairman’s Opening Address. By the Hon. Lord McLaren, Vice-President , 2 
On an Instrument for Trisecting any Angle. By Jas. N. Miller. Com- 
municated by Professor Chrystal. Issued separately February 12, 1902, 7 
Note on the Mathematical Theory of Miller’s Trisector, and its Relation 
to other Solutions of the Problem of Trisection. By Professor Chrystal. 
Issued separately February 12, 1902, ..... 9 
On the Relation of Miller’s Trisector to the Quartic Trisectrix, with a 
Description of a Seven-bar Lima§onograph. By Professor Chrystal. 
Issued separately February 17, 1902, . . . . .17 
The Condition of the Iron in the Spleen. By William Brodie Brodie, 
M.D., F.R.S.E., Muirhead Demonstrator of Physiology in the University 
of Glasgow. Issued separately February 17, 1902, . . .21 
A Theoretical Representation leading to General Suggestions bearing on 
the Ultimate Constitution of Matter and Ether. By John Fraser, 
Ordnance Survey. Communicated by Professor Chrystal. Issued 
separately February 21, 1902, ...... 26 
i the Existence within the Liver Cells of Channels which can be 
directly injected from the Blood-Vessels. By E. A. Schafer. Issued 
separately March 8, 1902, ...... 65 
Quaternion Binaries : an Extension of Quaternions to give an Eight- 
element System applicable to Ordinary Space. By Dr W. Peddie. 
Issued separately March 8, 1902, . . . . .70 
Certain Considerations regarding Algol Variation, with special reference 
to C.P.D. — 41 0, 4511. By Alexander W. Roberts, D.Se., F.R.A.S. 
(With Two Plates.) Issued separately March 31, 1902, . . 71 
Suggested Modifications of the Sign of Equality for use in Chemical 
Notation. Bv Hugh Marshall, D.Sc. Issued separately March 21, 
1902, . " . . . . . . . .85 
1Q4-50Q 
