5 
1923. 
February 21... Mr, A. Mallock. 
“ Test Plates for Microscopes, and Microscopic 
Definition.” 
Mr. J. B. Norman, F.R.M.S, 
“ Methods and Technique of Reconstruction.” 
March 21 ... Mr. Emil Hatschek, F.Inst.P. 
“ The Standard Methods of Ultra-Microscopy.” 
Dr. A. C. Thaysen. (Royal Naval Cordite Factory) 
“ The Destruction of Cotton and other Fabrics by 
Bacteria, and the Importance of the Microscope 
in the Study of this Destruction.” 
April 18 ... Dr. William B. Brierley, F.L.S., F.R.A.I. 
(Mycological Department, 
Rothamsted Experimental Station) 
“ The Microscope in Agricultural Research.” 
Professor A, C. Seward, M.A., F.R.S., F.G.S. 
(Master of Downing College, Cambridge) 
“ The Use of the Microscope in Palseobotanical 
Research.” 
! May 16 ... Mr. Leonard Taverner, A.R.S.M. 
“ The Principles and Application of Technical Metal- 
lurgical Microscopy.” 
Mr. W. M. Ames, M.A., B.Sc., A.I.C, 
“ Applications of the Microscope in the Manufacture 
of Rubber.” 
May 23 ANNUAL POND LIFE EXHIBITION. 
(Extra Meeting) 
June 20 ... Dr. James A. Murray, F.R.M.S, 
Will communicate Papers by the late Dr. J. E. 
Blomfield. 
(a) “Witches’ Brooms.” 
(b) “ Tumours of Trees : Birch.” 
SPECIAL NOTE. — The issue of this Provisional Programme must not 
be regarded as final. It is hoped that further original communica- 
tions will be received, and opportunity will be found for the reading 
of such communications on any evening other than January 17th. 
