PROCEEDINGS FOR 1919 XXIX 



24. — Elastic Constants of Calendered Crude Rubber. By H. A. 

 - Braendle, B.A. 



25. — The Performance and Work of the 72-inch Telescope. By 

 J. S. Plaskett, D.Sc, F.R.S.C. 



26. — Tests of the Figure of the 72-inch Mirror. By J. S. Plaskett, 

 D.Sc, F.R.S.C. 



27. — The Spectroscopic Binary and Eclipsing Variable, U 

 Ophiuchi. By J. S. Plaskett, D.Sc, F.R.S.C. 



28. — The Spectroscopic Orbit of 1 Geminorum. By Reynold K. 

 Young, Ph.D. 



29. — The Correction Factor of the Canadian Standard Anemo- 

 meter and the Most Probable Maximum Velocity and the Possible 

 Extreme Velocity in Gusts. By J. Patterson, M.A., F.R.S.C. 



30. — The Study of the Advance of the Ripple in Front of an as- 

 cending Column of Liquid. By J. C. Thompson, B.A. 



31. — On the Production and Purification of Helium from Natural 

 Gas. By John Satterly, F.R.S.C, John Patterson, F.R.S.C, E. F. 

 Burton, F.R.S.C, and H. F,, Dawes, Ph.D. 



32. — On the Combustibility of Mixtures of Hydrogen and Helium. 

 By John Satterly, F.R.S.C, and E. F. Burton, F.R.S.C 



33. — On the Latent Heats of Methane and Ethane. By John 

 Satterly, F.R.S.C, and John Patterson, F.R.S.C. 



34. — On a Curious Effect Observed when Nitrogen is Dissolved in 

 the Condensate obtained at Liquid Air Temperature from Natural 

 Gas. By John Satterly, F.R.S.C. 



35. — The Analysis of Simple Periodic Curves by a Projection 

 Method, with special Reference to Tidal Problems. By A. Norman 

 Shaw, D.Sc, and Violet Henry, M.Sc, with an introduction by Dr.' 

 W. Bell Dawson, Superintendent of Tidal Surveys. 



36. — The Mutual Potential Energy of Small Magnets and 

 Circular Coils. By A. Norman Shaw, D.Sc. 



37. — The Electrical Conductivity of Concentrated Solutions of 

 Highly Deliquescent Salts. By A. Norman Shaw, D.Sc, and M. E. 

 Wheeler, M.Sc. 



38. — The Effects of Ageing in Standard Weston Cells of a Modi- 

 fied Type. By A. Norman Shaw, D.Sc, H. E. Reilley, M.Sc. 



39. — The Synthesis of /? — Palmitodistearin and /? — Stearodipal- 

 mitin. By George Stafford Whitby. 



40. — Note on the Preparation of the Silver Salts of the Fatty 

 Acids and their Behaviour towards Ammonia. By George Stafford 

 Whitby. 



