vi. Proceedings. [November ^th y 19 19. 



Sound Ranging was a valuable means of getting information 

 about the hostile batteries, and a very large proportion of the 

 total number of locations were made in this way. 



Towards the end of the war the sections were faced with the 

 problem of moving their bases quickly to accommodate them to 

 a front line which never remained in the same place for many 

 days consecutively. They became expert in doing this and were 

 able to give material assistance in the last stages of the struggle. 



General Meeting, November 4th, 191 9. 

 Professor F. E. Weiss, D.Sc, F.R.S., F.L.S., in the Chair. 

 At this General Meeting, summoned in accordance with 

 the Articles of Association, an application having been 

 received and approved by the Council for the formation of 

 a Chemical Section of the Society, the following resolution 

 of the Council was submitted to the Society: — 



" That the Chairman and Secretary of the Chemical Section of the 

 Society be added to the Council as ex-ojficio Members thereof." 



This resolution was adopted. 



Professor SYDNEY CHAPMAN, M.A., D.Sc, F.R.S., Professor of Mathe- 

 matics and Natural Philosophy in the Victoria University of Manches- 

 ter, The University, Manchester ; Mr. W. H. PEARSON, M.Sc, A.L.S., 

 1 8. Palatine Road, Manchester; Mr. PERCY McMlCHAEI.,- Science 

 Master, Central High School for Boys„ Whitworth, Street, Manchester, 

 Central High School, Whitworth Street, Manchester ; Professor W. J. 

 SEDGEFIELD, M.A., Litt.D., Professor of the English Language in the 

 Victoria University of Manchester, The University, Manchester ; Pro- 

 fessor MAURICE A. CANNEY, M.A., Professor of Semitic Languages 

 and Literatures in the Victoria University of Manchester, and Ingleside, 

 St. John's Road, Knutsford, Cheshire; Mr. NORMAN TUNSTALL, 

 M.Sc, Lecturer in Physics,, The Victoria University of Manchester, The 

 University, Manchester ; Professor A. J. TURNER, M.A., B.Sc, Pro- 

 fessor in Textile Technology in the College of Technology, Man- 

 chester, The College of Technology, Manchester ; Miss ALICE 

 TABERNER,*B.Sc, Research Student in Botany, The Victoria University 

 of Manchester, The University, Manchester ; Professor W. L. BRAGG, 

 M.A., Langworthy Professor of Physics in The Victoria University of 

 Manchester, The University, Manchester ; and Dr. J. N. PRING, 

 M.B.E., Lecturer and Demonstrator -in Electro-Chemistry in the Vic- 

 toria University of Manchester, The University, Manchester ; were 

 elected Ordinary Members of the Society. 



Ordinary Meeting, November 4th, 19 19. 

 Professor F. E. Weiss, D jSc, F.R.S., F.L.S., in the Chair. 



Professor William H. Lang, M.B., CM., D.Sc, F.R.S., 

 gave a Lantern Demonstration on: "One of the Simplest 

 Land Plants, Ilomea Lignieriy 



The Lantern Demonstration illustrated the further results 

 obtained by Dr. R. Kidston and Professor W. H. Lang in the 

 study of the silicified Old Red Sandstone plants at Rhynie, 



