PROCEEDINGS FOR 1920 XXV 



35. — On the Electrical Conductivity of Copper Fused with Mica. 

 By Miss M. I. Mackey and Miss Ida Giles, with Introduction by 

 Professor J. C. McLennan, F.R.S. 



36. — Vacuum Spark Spectra of Various Elements in Helium in 

 the Extreme Ultra- Violet. By Professor J. C. McLennan, F.R.S. , and 

 A. C. Lewis, M.A. 



37. — On the Absorption and Series Spectra of Lead. By Pro- 

 fessor J. C. McLennan, F.R.S., and R. V. Zumstein, M.A. 



38. — 'On the Mobilities of Ions in Helium at High Pressure. By 

 Professor J. C. McLennan, F.R.S., and E. Evans, M.A. 



39. — Arc Spectra in Vacuo and Spark Spectra in Helium and of 

 Various Elements. By Professor J. C. McLennan, F.R.S., J. F. T. 

 Young, M.A., and H. J. C. Ireton, M.A. 



Frank T. Shutt, 



Secretary. 



On the motion of Dr. Shutt, seconded by Professor A. T. DeLury, 

 the report of Section III was adopted. 



REPORT OF SECTION IV 



Section IV begs to submit the following report: Four sessions of 

 the Section were held at which 15 members were present, namely: 



J. A. Dresser, President; W. Mclnnes, Secretary; L. W. Bailey, 

 R. W. Brock, A. P. Coleman, W. H. CoUins, D. B. Dowling, E. R. 

 Faribault, R. A. A. Johnston, E. M. Kindle, W. G. Miller, R. G. 

 McConnell, W. A. Parks, T. L. Walker, James White. In addition 

 many visitors were present at each Session. 



Edward M. Kindle, A.B., M.S., Ph.D., C. W. Knight, B.Sc, 

 J. Austin Bancroft, M.A., Ph.D., Richard P. D. Graham, B.A., 

 M.Sc, were elected members of the Section during the year. 



The following officers were elected for next year: President, 

 William Mclnnes; Vice-President, W. A. Parks; Secretary, R. A. A. 

 Johnston. 



The Committee on Printing of last year, E. R. Faribault, James 

 White, William Mclnnes, were re-elected. 



There are two vacancies on the membership of the Section and it 

 was resolved by the Section that two members be elected to fill the 

 vacancies, and that the General Meeting be asked to authorize an 

 increase of two in the membership of the Section. 



The following papers were presented at the Session of the Section : 



L— A Devonian Glacier. Bv G. F. Matthew, D.Sc, F.R.S.C. 



