OFFICERS AND COUNCIL. vil 
PAST GENERAL OFFICERS OF THE ASSOCIATION. 
Professor T. G. Bonney, F.R.S. Major P. A. MacManon, F.R.S. 
Sir E. SuHarpey Scuarer, F.R.S. Professor W. A. Herpman, C.B.E., 
Dr. D. H. Scort, F.R.S. F.R.S. 
Dr. J. G. Garson. 
HON. AUDITORS. 
Professor A. BowLey. | Professor A. W. KrrKapy. 
LOCAL OFFICERS: EDINBURGH, 1921. 
CHAIRMAN OF GENERAL AND EXECUTIVE COMMITTEES. 
The Rt. Hon. THomas Hurcuison, Lord Provost. 
LOCAL TREASURER. 
Tuomas B. Wuirtson, C.A. 
LOCAL SECRETARIES. 
Professor J. H. AsHwortH, D.Sc., F.R.S. 
A. Grierson, §.8.C., Town Clerk. 
ASSISTANT LOCAL SECRETARY. 
Professor W. T. Gorpon, D.Sc. 
SECTIONS & SECTIONAL OFFICERS, 1921. 
A.—MATHEMATICAL AND PHYSICAL SCIENCE. 
President.—Prof. O. W. RicHarpson, D.Sc., F.R.S. 
Vice-Presidents.—Prof. C. G. Barxta, D.Sc., F.R:S. ; Prof. A. S. 
Eppincton, M.Sc., F.R.S.; Principal Sir J. A. Ewine, K.C.B., LL.D., 
D.Sc., F.R.S.; C. G. Knorr, D.Sc., LL.D., F.R.S.; Prof. R. A. Sampson, 
D.Sc., F.R.S.; Prof. E. T. Wairraxer, M.A., F.R.S. 
Recorder.—A. O. RAanxine, D.Sc. 
Secretaries.—-Prof. H. R. Hasst; J. Jackson; M. A. Gistert; Prof. 
A. M. Tynpatt, M.Sc. 
Local Secretary.—G. A. Carsz, D.Sc. 
B.—CHEMISTRY. 
President.—M. O. Forster, D.Sc., Ph.D., F.R.S. 
Vice-Presidents.—Prof. G. Barcrer, D.Sc., F.R.S.; C. T. Herycock, 
M.A., F.R.S. ; Principal J. C. Irving, D.Sc., Ph.D., F.R.S.; Prof. Sir J. 
Watxer, D.Sc., Ph.D., LL.D., F.R.S. 
Recorder.—Prof. C. H. Drscn, D.Se., Ph.D. 
Secretaries.—H. McComste, D.Sc.; E. H. Tripp, D.Sc. 
Local Secretary.—J. FR. Macxenztr, Ph.D., D.Sc. 
