IV 
CONTENTS. 
No. 
XVIII. The Musical Scale. By Joseph Goold. Communicated by 
C. R. Gibson, • 
( Issued separately January 22, 1921.) 
XIX. Thermometer Screens. By the late Dr John Aitken, F.R.S. 
(The paper was finished shortly before his death.) Com- 
municated by Dr C. G. Knott, F.R.S. , .... 
{Issued separately January 24, 1921.) 
Obituary Notices : — 
Sir John Jackson, Kt., LL.D. By David Alan Stevenson, 
B.Sc., M.Inst.C.E., 
David Berry Hart, M.D., F.R.C.P.E., Librarian, Royal College of 
Physicians, Edinburgh. By J. W. Ballantyne, M.D., 
By Major-General W. B. 
F.R.C.P.E., 
Surgeon-General W. C. Gorgas. 
Bannerman, M.D., D.Sc., 
Obituary Notices of Fellows, Honorary and Ordinary. By The 
Assistant Secretary, 
Appendix — 
Proceedings of the Statutory General Meeting, October 1919, . 
Proceedings of the Ordinary Meetings, Session 1919-1920, 
Proceedings of the Statutory General Meeting, October 1920, . 
List of Contributions to Special Subscription Fund . 
The Keith, Makdougall-Brisbane, Neill, Gunning Victoria 
Jubilee, and James Scott Prizes ...... 
Awards of the Keith, Makdougall-Brisbane, Neill, and Gunning 
Prizes .......... 
Accounts of the Society, Session 1919-1920, 
The Council of the Society at October 1920, 
Alphabetical List of the Ordinary Fellows of the Society, . 
List of Honorary Fellows of the Society at January 1, 1921, 
List of Ordinary Fellows of the Society elected during Session 
1919-1920, . 
Changes in Fellowship during Session 1919-1920, 
Additions to Library by Gift or Purchase . . . . 
Laws of the Society, .... ..... 
Index, 
Index, under Authors’ Names, of Papers published in Trans- 
actions, if . 
161 
172 
182 
185 
187 
191 
199 
203 
207 
208 
210 
213 
219 
226 
227 
246 
248 
248 
249 
253 
260 
263 
«i 
The Papers published in this part of the Proceedings may be 
had separately, on application to the Publishers, at the follow- 
ing Prices : — 
No. XII . 
No. XIII 
No. XIV 
•No. XV . 
Price Is. 4d. 
„ 2s. Od. 
,, Is. 4d. 
„ Is. 4d. 
No. XVI 
No. XVII 
No. XVIII 
No. XIX 
Price Is. Od. 
,, Is. Od. 
„ Is. 4d. 
,, Is. 4d. 
5J 
